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To our Michigan Gardener print magazine readers,

Since May, 1996 our readers have enjoyed 176 issues of Michigan Gardener totaling over 4.5 million copies distributed throughout southeastern Michigan. We are proud to have continuously published for nearly 25 years despite the challenging times surrounding September 11, 2001 and the Great Recession. This streak will be temporarily disrupted due to the Coronavirus and the Governor’s March 23, 2020 Executive Order. As a result, we are unable to publish our April issue.

We know this comes as a disappointment for gardeners that eagerly await our April issue and the start of the gardening season. Like so many businesses, we pause as the world waits and watches. However, we are optimistic this too will pass and we will soon get back to publishing. We look forward to a gardening season that will surely be one of the most rewarding in recent memory.

We WILL be publishing our April E-Newsletter in addition to posting content to our website and social media. If you haven’t signed up for our E-Newsletter yet, just go to MichiganGardener.com and enter your email.

Thank you for your understanding,

Eric Hofley and Jonathon Hofley

Archive for the Janet’s Journal tag

Janet’s Journal: Fertilizing Tips

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Simple suggestions for wiser fertilizer use

Exotic species such as rhododendron and azalea that wouldn’t normally be found growing in Michigan’s alkaline soils need special fertilization every week or two from early May until late July. Use a water-soluble fertilizer that includes micronutrients. Products range from seaweed solutions to acid-loving plant powders that dissolve in water. Spray the solution onto the plant’s foliage, so some nutrients can be absorbed directly into the leaves.
Exotic species such as rhododendron and azalea that wouldn’t normally be found growing in Michigan’s alkaline soils need special fertilization every week or two from early May until late July. Use a water-soluble fertilizer that includes micronutrients. Products range from seaweed solutions to acid-loving plant powders that dissolve in water. Spray the solution onto the plant’s foliage, so some nutrients can be absorbed directly into the leaves.

  1. The basic idea of fertilization is to supplement the soil rather than the plant. Just because the label says “Lawn Fertilizer” or “Rose Food,” it doesn’t mean that fertilizer must be used exclusively on that plant, or that plant must have its namesake fertilizer. Specialty fertilizers in general were formulated to meet greenhouse growers’ needs, providing enough nutrients in the right proportions for the named plants when those are growing in soilless peat-bark mixes. A Michigan State University Extension soil test is a better guide for choosing fertilizer for field-grown plants. It pinpoints nutrients present and lacking in a soil. You may correctly use lawn fertilizer on roses and vegetable formulas on trees if those products most closely match the nutrient ratios prescribed by the MSU soil test result.
  2. An excess of any nutrient can be wasteful, or even harmful, to plants or the wider environment. Avoid “bloom builder” fertilizers with an extremely high middle number (10-30-20 and 5-30-5 formulations are two examples) unless you know your soil is deficient in what that middle number measures, phosphorus.
  3. Learn to recognize needy plants by diminishing leaf size, paleness or washed-out bloom color. Use water soluble products as mid-season supplements for these plants – kelp and fish emulsion sprays or water soluble powders.
  4. Accept the fact that some plants are so far removed from their forebears that they need more nutrients than nature can supply. Varieties of rose, delphinium, clematis, dahlia, tomato and corn bred for enormous flowers or fruits won’t live up to their catalog descriptions without fertilizer supplements.
  5. Likewise, plants that you plant in soil that is very different than their native habitat will probably need special attention. Rhododendrons, azaleas, pieris, mountain laurel and heather cannot obtain essential nutrients from alkaline soil and so require “acid-loving plant” fertilizers that supply micronutrients in water soluble form.
  6. Use MSU Extension’s soil testing lab to learn what nutrients your soil really needs. (Contact your county’s MSU Extension office for a soil testing kit and instructions.) You may be surprised. Some soils have everything a plant needs except nitrogen, so the fertilizer recommendation from MSU’s soil lab may call for a simple nitrogen source such as 20-0-0 lawn fertilizer.
  7. Don’t use it if you don’t want to. Keep your soil’s organic matter content high by continual sheet composting – layering nutrient-rich plant matter such as fallen leaves and kitchen parings over the soil. Organic matter decomposes into nitrogen and other nutrients. One percent of organic matter in the soil yields nitrogen at a rate comparable to fertilizing with one pound of actual nitrogen per thousand square feet. It takes 3 pounds of 33-0-0 or 100 pounds of 1-0-0 fertilizer to do the same for that 1,000 square feet.
  8. Microorganisms and other soil-dwelling creatures must digest slow-release organic fertilizers such as cottonseed meal and feather meal before the nutrients in these products become soluble and available to plant roots. So apply such fertilizers a month or two before you expect the plants in that area to begin rapid growth.
  9. “Organic” and “inorganic” (manufactured) fertilizers often look very similar and other distinctions between them are also fuzzy. A plant can’t use either type of fertilizer until it has been dissolved in water. Most “organics” must be broken down by fungi and soil-dwelling creatures before they dissolve, while many “inorganic” fertilizers dissolve immediately. Yet fish emulsion, kelp and compost tea are organic and water soluble.

Flower color may be deeper in some species when the plant is given supplemental fertilizer. But fertilizer isn’t necessary if the flowers and colors in your garden measure up on the yardstick that counts most—your own appreciative eye.
Flower color may be deeper in some species when the plant is given supplemental fertilizer. But fertilizer isn’t necessary if the flowers and colors in your garden measure up on the yardstick that counts most—your own appreciative eye.

The queen of vines, large-flowered clematis, has a reputation for loving alkaline soils. Although this myth has been dispelled by experts, many gardeners continue to spread agricultural lime or gypsum at the feet of their clematis. In Michigan’s naturally-alkaline soils, this repeated liming can be counterproductive, blocking other nutrients from reaching the plant.
The queen of vines, large-flowered clematis, has a reputation for loving alkaline soils. Although this myth has been dispelled by experts, many gardeners continue to spread agricultural lime or gypsum at the feet of their clematis. In Michigan’s naturally-alkaline soils, this repeated liming can be counterproductive, blocking other nutrients from reaching the plant.

Article by Janet Macunovich and photos by Steven Nikkila, www.gardenatoz.com.

Janet’s Journal: A Veggie Smart Perspective

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Harvest time at Ernie Bergeron’s—beautiful as well as tasty and fragrant.
Harvest time at Ernie Bergeron’s—beautiful as well as tasty and fragrant.

One man’s successful transition of backyard lawn to vegetable garden

Rainwater can be collected for irrigation. Bergeron’s downspouts fill rain barrels. The barrels are elevated on blocks so they can be tapped to supply the garden.
Rainwater can be collected for irrigation. Bergeron’s downspouts fill rain barrels. The barrels are elevated on blocks so they can be tapped to supply the garden.

Being laid off from your job can certainly change your perspective. In the early 1970’s, trucker Ernie Bergeron received a lay-off notice. Perhaps it was because the future wasn’t looking too bright that a new, dim view of lawn overtook him one day. He recalls standing in his backyard and wondering, “What am I growing all this grass for? I can’t eat grass!”

So he started digging, and planted a vegetable garden. 30 years later, retired but still digging, he improves his techniques every year. The vegetable “bed” now fills every inch of his 750 square foot backyard. It lives up to Bergeron’s description—“my country garden in the city,” partly because it’s completely walled off from the neighbors by lush, bird-planted grape vines and black raspberry bushes that grow along the enclosing fences.

It’s as self-contained as any farm, too. It includes some perennial crops as well as the more standard annual vegetables. There’s a compost area, rainwater collectors and a gravity-fed irrigation system, storage for equipment, plus many practically ingenious and whimsically inspired inventions. A salvaged 55-gallon drum is the main element in an elevated, rotating compost bin, which he turns daily to reap a steady supply of crumbly dark compost. His latest project was once a truck cap. It sits on a cinder block frame now, its black sides absorbing heat and windows oriented to admit light. Bergeron’s fitted it with shelves and is nearly ready to put it to use as a greenhouse.

Vegetable gardening isn’t so popular as flower gardening, but you wonder why, when you stand in Bergeron’s domain and sample the produce. One bite of a fresh-picked cuke or whiff of a warm, ripe pepper and I’m ready to redesign some flower beds to make room for potatoes, corn and beans. It’s like trading one sense for two or three—less visually exciting, perhaps, but heavenly in scent and taste, and much more likely to draw me in to touch and fondle.

And as for the possibilities – the sky’s the limit in this oldest of gardening pursuits. In the 6,000 years that beans have been cultivated, gardeners were not sitting still but selecting and passing on their favorite varieties. Although commercial farmers in North America now restrict themselves to just six potato cultivars, hundreds of types still exist, legacy of ancient New World gardens that provided a range of potato-y flavors from nutty to tart.

It would be a shame, on many levels, to let that legacy pass. European explorers of the 18th century found far better gardens in the Americas than they had known back home. Native Americans grew more species and varieties than most Europeans had ever seen, and in many cases used more advanced techniques. It’s likely that Bergeron, keen on treading lightly on the Earth by growing organically, would have enjoyed comparing notes with those gardeners. They would both know from experience that thorough soil preparation and the plant’s own health are the best defense against any pest.

Bergeron worked hard on his soil preparation at first, but now he works smarter and less hard. “What I found when I first started digging was that this lot was used once for a dumping site. A manufacturing plant that was near here seems to have just dumped truckloads of scraps. It was disgusting. I knew I had to do something to make the soil better.

“Now I cover the whole yard with 10 to 12 inches of leaves in the fall. I wait until it dries in spring then sometime in May I turn the leaves and till them in. Maybe I’ll till them twice if they weren’t all the way dry the first time. Then I level it all and make my raised beds.

“I use string to outline my paths and then dig down, taking soil from the paths, throwing it on the rows and leveling it off. I usually make the rows no more than four feet wide so I can work in them without stepping in them. I can work two feet into the row from either side without stepping on it. It’s important to stay off the rows because the plants grow so much better in loose soil.

“I don’t start seed in the house, usually. The plants are too spindly when I grow from seed in the house. I buy my plants already started, although this year I’ll try out my new greenhouse. Some things I sow directly, of course—beets and carrots, for instance. I make my little rows and start the seed right there.

“I cut some rhubarb and horseradish in May. How do I manage to work around perennials like horseradish and rhubarb when I till in the leaves? I just till right over the horseradish – small pieces come up all over; enough for me to use if I watch for them. The rhubarb grows along the edge with the raspberries and the grape vines on the fence, where I don’t till.

“I don’t do much to the fruit. I prune the raspberries when I have time. I cut the dead canes out and throw a shovel of compost over their roots once in a while. I actually don’t dare go right in with them because I’d be sure to cry and because of what I’d look like—a guy trying to wrestle a wildcat!

“I grow way more than I can eat—here, have some of this cabbage, and some cucumbers. And I eat things other people might not think to try—here, taste this,” he says, pointing to the weed purslane that covers a bare area. “Really high in vitamin C, and tasty!”

“Learn how to make compost instead of using those chemical fertilizers – it’s free. Who fertilizes the forest? No one!,” says Bergeron.
“Learn how to make compost instead of using those chemical fertilizers – it’s free. Who fertilizes the forest? No one!,” says Bergeron.

Ernie Bergeron’s suggestions for the vegetable gardener:

  1. Don’t plant too early. “I usually wait until the latter part of May to plant. I’d rather be late than early.”
  2. “Learn how to make compost instead of using those chemical fertilizers—it’s free. Who fertilizes the forest? No one! I shovel compost onto the beds, and also make compost tea. And not only do my plants grow, but they grow well, even though I’ve been growing the same things in the same places all these years. No rotating—there’s really not room to rotate in a yard this small, anyway. It’s the compost and all the leaves I add that does it. If I have to buy fertilizer, I use fish emulsion and use it sparingly, maybe one or two times a season if the plants look a little pale.”
  3. “Get away from chemicals. You don’t need them if the soil is in good shape. And encourage birds—a bird feeder I made from a metal trash can lid brings lots of birds in here. My friends the sparrows eat lots of bad bugs!”
  4. “Keep weeds down by mulching with grass clippings or with leaves. You can store the leaves in bags from the previous fall. Just put the leaves in trash bags then cover the bags with a tarp so moisture doesn’t get in.”

Article by Janet Macunovich and photos by Steven Nikkila, www.gardenatoz.com.

After the Fall: Late-Season Plant Staking

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Many of the players in this scene owe their upright stance to the gardener who took a few minutes in May to position a grow-through support above the plant.
Many of the players in this scene owe their upright stance to the gardener who took a few minutes in May to position a grow-through support above the plant.

Save grace and flower with these restorative plant staking techniques

by Janet Macunovich / Photos by Steven Nikkila

This article is not about proper plant staking, that pre-meditated placing of supports. It’s about staking after a plant falls or when a plant flop is imminent.

Surely you’re familiar with the situation: it takes place in high summer. It involves a perennial whose progress you’ve been following with pleasure—by its fullness and vigor it has made it clear that this year’s bloom is going to be the best ever. The action begins as you step outside to look over your garden and find it, the promising star, leaning drunkenly against a neighboring plant or sprawled flat like a worn out puppy on a hot day.

The next time you find yourself playing this scene, resist the urge to grab all the stems, stuff them together in a string girdle and tether them to a stake. Few things look more ridiculous than bunched, crooked-tip stems with foliage turned inside-out, torn or flattened by the encasing cord. Not only are your efforts sure to produce a visual disaster, chances are you’ll crack stems or flower stalks in the process.

Before you take that route, try one of the following methods of restorative staking.

Left, a grow-through support is a simple, effective device—if it’s used in May. Right, the globe thistle (Echinops ritro) stands tall and straight in July. If you look closely you can see the edge of the support that was placed in May and keeps the plant in line.
Left: a grow-through support is a simple, effective device—if it’s used in May. Right: the globe thistle (Echinops ritro) stands tall and straight in July. If you look closely you can see the edge of the support that was placed in May and keeps the plant in line.

Stakes and crutches

First, gather a dozen or more stakes that are just as tall as or a bit taller than the plant was before it fell. Round up a small hammer. Put your pruners in your pocket, along with a roll of string or wide, soft ties—I prefer to use green- or straw-colored hemp. Often you will need some crutches as well, so take out your loppers and prune a shrub or two to get a half dozen sticks that are at least half the height of the fallen plant and have forked tops.

This globe thistle was not staked in May. By July 1, it’s leaning drastically, inches from a full fall.
This globe thistle was not staked in May. By July 1, it’s leaning drastically, inches from a full fall.

Now, lift a stem of the fallen plant you’ll be staking. Raise it gently toward vertical to see how far back you can push it without cracking it. Lay the stem back down again.

Insert 4 or 5 bamboo canes, straight sticks or hooked-end metal rods in the center of the plant’s air space. Imagine a spot about six inches underground, directly below the center of the plant’s crown. Insert the stakes as if they would meet at that point below the plant. Angle them so they are not straight up and down, but lean outward slightly to match what your test lift said the stems can bear.

Insert 6 or 8 more stakes to make a ring around the first. Lean these stakes outward to match the angle of the inner ring. An important note: You must be happy with the stakes’ positions before you start to work with the stems. The stakes should cover space evenly and gracefully—I aim to make them look like the spray of a fountain. I have learned that if I am not pleased with the stakes alone, I will not be happy with the finished staking either.

Tap the stakes into the ground with a hammer. I’ve found that if I use my weight to force them in, it’s too likely that I’ll lose my balance at least once and end up stepping or falling into the plant’s prostrate stems.

Set the stakes just deep enough to be steady. They don’t have to be driven to China, because each one is only going to support one or perhaps two stems.

To position the stakes well, you may drive them right through the crown of the plant. Don’t worry too much about this. Most of the time, the stakes will go through without serious damage. Once in a while a stake will pierce an important root or stem base, in which case the stem will tell you by wilting the next day and you’ll just cut it out then.

All of the fallen stems will be tied to or contained within the stakes you see here. You should be happy with the arrangement of the stakes before tying stems to them.
All of the fallen stems will be tied to or contained within the stakes you see here. You should be happy with the arrangement of the stakes before tying stems to them.

Next, take a look at the fallen stems. Picture the crown of the plant as a bull’s eye target and pick 4 or 5 stems that emanate from the bull’s eye at the center. Raise them gently, one by one, to meet in the middle of the inner ring of stakes. This often requires patience to separate the stems from the heap and guide them past the stakes without breaking them or tearing foliage.

Tie these central stems together, loosely. Let them lean against an inner-ring stake. This is only a temporary arrangement, so it doesn’t have to be pretty.

From stems still on the ground, select some that arise from the first ring around the bull’s eye. Tie one to each inner-ring stake.

Each of the inner-ring stakes has a stem tied to it now, and several stems stand free in the center. Here, for demonstration purposes, the inner ring of stakes has been temporarily marked with orange sleeves.
Each of the inner-ring stakes has a stem tied to it now, and several stems stand free in the center. Here, for demonstration purposes, the inner ring of stakes has been temporarily marked with orange sleeves.

After the inner ring of stakes is full, release the string that holds the central stems together. Usually these will not fall but will rest against each other or the stakes. However, if it seems like they may slip through and fall to the ground again, take one turn of string around the inner stakes to corral the loose stems within.

Use a figure-eight tie to prevent crushing the stem and to allow it necessary swaying leeway in winds and storms. That is, cross the two ends of your tying string in between the stem and the stake.
Use a figure-eight tie to prevent crushing the stem and to allow it necessary swaying leeway in winds and storms. That is, cross the two ends of your tying string in between the stem and the stake.

Now raise a stem and tie it to each outer-ring stake. Clip out weak and flowerless stems.

Cut off the tip of any stake that shows above the plant.

You can obtain crutches by cutting branches from many common landscape plants, including burning bush, crabapple and spruce. All foliage is removed and soft twigs clipped off to turn this 36-inch piece of burning bush into a crutch.
You can obtain crutches by cutting branches from many common landscape plants, including burning bush, crabapple and spruce. All foliage is removed and soft twigs clipped off to turn this 36-inch piece of burning bush into a crutch.

Use crutches to support the outermost stems of the fallen perennial. These outside stems are often least flexible and most crooked since they were the first to fall. Raise the outer stems one at a time, push a crutch into the ground to support it, then let the stem rest there. Sometimes one crutch has enough forks to support several stems. If so, drop stems one at a time into the crutch—don’t bunch them.

Raise the fallen stem. Push a crutch firmly into the ground so its fork is beneath the stem, then let the stem rest on the crutch.
Raise the fallen stem. Push a crutch firmly into the ground so its fork is beneath the stem, then let the stem rest on the crutch.

Here’s the globe thistle, arrested from its fall and restored to nearly full glory.
Here’s the globe thistle, arrested from its fall and restored to nearly full glory.

If raised before its flowers are open, a stem’s tip will turn up to vertical again. Here’s the plant, proud and tall two days after being staked, its crooked tips already straightening.
If raised before its flowers are open, a stem’s tip will turn up to vertical again. Here’s the plant, proud and tall two days after being staked, its crooked tips already straightening.

Crutches alone

Sometimes when a plant is only beginning to fall or when it has very few stems, it can be returned to grace with just a few well-placed crutches.

Left, This milky bellflower Campanula lactiflora ‘Loddon Anna’ wouldn’t normally need staking but is growing away from the shade of big trees 25 feet to the west. Its stems are likely to descend further unless staked. Crutches are all that will be needed to bring the plant back up from its fall. Right, Each stem was lifted and a crutch pushed into the ground to hold it nearer to vertical. For crutches with multiple forks, additional stems were then lifted and guided into the crutch.
Left: This milky bellflower (Campanula lactiflora ‘Loddon Anna’) wouldn’t normally need staking, but it is growing away from the shade of big trees 25 feet to the west. Its stems are likely to descend further unless staked. Crutches are all that will be needed to bring the plant back up from its fall. Right: Each stem was lifted and a crutch pushed into the ground to hold it nearer to vertical. For crutches with multiple forks, additional stems were then lifted and guided into the crutch.

Lasso it, then crutch it

Throwing a lasso and cinching it around a plant is not attractive or even effective—the whole bale can still slump to one side or the other. However, I do sometimes cinch stems temporarily to pull a plant together while I set crutches.

Crutches are often simpler to place than late-season stakes and are much less visible than any kind of corral or police line you could construct around the outside of the plant with stakes and string.

Left: This culver’s root (Veronicastrum virginicum) was beginning to topple. Although it looks ridiculous in its string girdle, it’s only a temporary measure – a way to make the plant “suck it in” while crutches are placed. Right: While it’s tied up I can set crutches around the base of the plant. They’re sleeved with orange so you can see them better.
Left: This culver’s root (Veronicastrum virginicum) was beginning to topple. Although it looks ridiculous in its string girdle, it’s only a temporary measure—a way to make the plant “suck it in” while crutches are placed. Right: While it’s tied up, I can set crutches around the base of the plant. They’re sleeved with orange so you can see them better.

Left: I’m releasing the plant from its string girdle now, and the stems are relaxing against the crutches. Right: Don’t you think using crutches allows the plant to retain its grace? Just compare it to the strung-up culver’s root in photo number 1.
Left: I’m releasing the plant from its string girdle now, and the stems are relaxing against the crutches. Right: Don’t you think using crutches allows the plant to retain its grace? Just compare it to the strung-up culver’s root in photo number 1.

Another reason to temporarily tie up a plant is to work on a fallen neighbor:

Left: This yellow daylily and blue balloon flower (Platycodon grandiflorus) make a great combination when they bloom together, but the daylily has overgrown its neighbor. The daylily can be divided in fall or spring to reduce its size. For now, I’ll stake the balloon flower. Right: It helps to tie the daylily out of the way while I work on the balloon flower.
Left: This yellow daylily and blue balloon flower (Platycodon grandiflorus) make a great combination when they bloom together, but the daylily has overgrown its neighbor. The daylily can be divided in fall or spring to reduce its size. For now, I’ll stake the balloon flower. Right: It helps to tie the daylily out of the way while I work on the balloon flower.

Left: I’ve placed the stakes and am raising and tying the fallen balloon flower stems. An alternative would be to leave the fallen stems on the ground and use short stakes to keep the tips vertical. I decided against that option since I prefer to have the blue balloon flowers open at the same height as the daylilies. Right: Once the balloon flower was staked, I released the daylily from its bonds. I also clipped back some of the daylily’s leaves to make it less overwhelming.
Left: I’ve placed the stakes and am raising and tying the fallen balloon flower stems. An alternative would be to leave the fallen stems on the ground and use short stakes to keep the tips vertical. I decided against that option since I prefer to have the blue balloon flowers open at the same height as the daylilies. Right: Once the balloon flower was staked, I released the daylily from its bonds. I also clipped back some of the daylily’s leaves to make it less overwhelming.

Wrap-up: a time consuming thing

Staking after the fall takes considerably more time and skill than preventive staking. As an example, staking the blue globe thistle after its fall, including the time required to cut branches and make crutches, took about an hour. Placing the grow-through grid over the globe thistle pictured at the beginning of this article took less than five minutes in May. As my Dad always said, “If you do a thing right at the start, even if it seems like a lot of work, it will still save time in the long run.”

On the other hand, Mom must have told me a million times, “Don’t cry over it! Use your head and come up with a way to fix it.”

Out in the garden in July and August, I smile every time I stake after a fall. I’m not only salvaging a pretty plant, I’m proving my parents’ wisdom.

Article by Janet Macunovich and photos by Steven Nikkila, www.gardenatoz.com.

An Expert Perspective: Making the Most of Garden Walks

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You can ask for the names of the plants that thrill you as you tour a garden. But what if you were seeing those plants through the eyes of someone involved with breeding them? What would that expert see?
You can ask for the names of the plants that thrill you as you tour a garden. But what if you were seeing those plants through the eyes of someone involved with breeding them? What would that expert see?

by Janet Macunovich / Photos by Steven Nikkila

Live my life in the garden, that’s what I do. Work in others’ gardens. Teach in gardens. Write about gardens. With all the time I spend there, it seems like my great revelation about making the most of garden walks would have come to me there.

Nope. It came on a horse.

My daughter wanted to go riding, but none of her friends could go. So I went. It was a pretty fall day, but a weekday. The stables were nearly deserted, and the same man who took our money and collected our insurance waivers saddled our horses and one for himself. We’d take his favorite path, he told us, the one he’d first cut through the woods ten years before.

It can be fun, mind-expanding or even shocking to hear what someone else is thinking as they look where you do. When you wonder about how long it took to plant it, they may be pondering what kind of finish those non-plant materials need to be weather-resistant.
It can be fun, mind-expanding or even shocking to hear what someone else is thinking as they look where you do. When you wonder about how long it took to plant it, they may be pondering what kind of finish those non-plant materials need to be weather-resistant.

What do you see? Pretty plant combinations that you wonder if you can grow? Intriguing garden art the source for which you’d like to know? Are those the same things someone else would see? You never know, and therein lies one of the greatest values of taking garden walks!
What do you see? Pretty plant combinations that you wonder if you can grow? Intriguing garden art the source for which you’d like to know? Are those the same things someone else would see? You never know, and therein lies one of the greatest values of taking garden walks!

Single file behind him, we rode into those woods. Quietly at first, enjoying the colors and the sush of hooves on fallen leaves.

Then my daughter pointed out a clump of baneberry just off the trail, turning in her saddle to be sure I looked where she pointed. I saw, and we made some just-to-talk guesses about what else we’d find growing there, if we waded in.

Our guide had not even turned to look, but my daughter, ever the sociable gatekeeper in conversation, called to him. “Don’t worry. We aren’t really going to stop. Way too much poison ivy in there!”

Then, he did stop. Reined right in. “You know what poison ivy looks like?” he asked us.

“Uh, huh,” we both said. I looked at the vines scrambling over brush and along the ground, some shed of foliage, others with a red leaf or two still clinging. Vines on tree trunks alongside the path were presenting their leaves so close that our horses were surely carrying some of the oil on their coats. How could someone who rode this path every day, who dealt with the effects of poison ivy all the time—as he was now proceeding to tell us—how could he NOT know what it looked like?

So we pointed out the vines, the leaves, and some telltale characteristics of both. Pulling a gallon baggie from my jeans pocket—as a dog owner and a cutting-snitcher, I’m rarely ever without one—I covered my hand, reached out and broke off a bit of leafy vine. “Here,” I said, reversing the bag on itself, to seal vine and oil inside. “We can hang this on your bulletin board. It’ll be safe enough in the bag, and people will know exactly what to watch out for.”

You’d probably be encouraged to take home not just the name of the plants, but the tonnage of stone and details of construction if your 70-year-old tour companion said, on seeing this stonework, “You know, Bonnie and I built our stone wall last year by ourselves and it was easier than it looks.”
You’d probably be encouraged to take home not just the name of the plants, but the tonnage of stone and details of construction if your 70-year-old tour companion said, on seeing this stonework, “You know, Bonnie and I built our stone wall last year by ourselves and it was easier than it looks.”

What a nice smile he gave us! So I dared to ask the burning question.

“I wonder,” I said. “I look into the woods here and the poison ivy jumps out at me. You’ve been scanning the woods as we ride, too, but you weren’t registering those vines until just now. What is it YOU see alongside this path?”

So, for an hour or so one afternoon, I looked into those woods through a horse-savvy, outdoorsman’s eyes. There was so much there I would have missed.

The butt of a large tree, sawed off nearly at ground level wouldn’t have interested me, but it made our guide chuckle. “Had to cut through that old tree twice. Once when it first cracked and leaned over the path. A second time when the horses kept shying and wouldn’t walk past the stump I left behind!”

Some tumbled rocks held another story. “I always take a good look around those big rocks because once there was a fox den up there. Those foxes, they sure take care of the mice around the barns.”

On a garden walk, there are so many eyes, and each pair sees something different.
On a garden walk, there are so many eyes, and each pair sees something different.

That eye-opener of a ride changed what I do before going on a garden tour.

I still make my standard preparations. That starts with admitting that no matter how impressive a plant or garden feature is when I see it, I will NOT recall its name, where someone said it came from, or even why it impressed me without a memory aid. So I round up a pencil, a pocket notebook and sometimes a camera, too. I don’t bother with pens anymore, having learned that pencils work even in the rain and graphite scribbles are legible even after something unfortunate like a dip in a water garden.

Then, I take a stroll through my own yard a day or so before the garden walk. The objective is to note my current stars—what’s in bloom or has other appeal such as great form, attractive seed pods or sweet smell. Why? Because my pre-tour perceptions will help me sift through all the beautiful things on the tour to develop a truly practical “must have right now” list.

On the tour, I consider each potential “must have” against that mental snapshot of my own yard. I don’t concentrate hard to do this, just let the visual stimulation switch on what every gardener has: great visual sense. Very quickly, the mind’s eye can tuck the item under consideration into a hundred different real spots, and critique it.

Fun garden art? Lush groundcover? Multi-stemmed tree trunk? A beautiful trellis/vine combination? For each viewer, it may be something different.
Fun garden art? Lush groundcover? Multi-stemmed tree trunk? A beautiful trellis/vine combination? For each viewer, it may be something different.

This process flags for me the things I can buy right away, even on the way home, because they can be added without rearranging a whole garden. I star those in my notes as “must have’s.” The runners-up are noted as well but not starred. I won’t make the mistake of hauling home a bunch of plants that may languish and perhaps die in their pots while I get around to moving a fence or adding a walk (those little details that can delay a planting).

Finally, I recruit a companion for these treks to peek into private gardens. Who? Anyone who would enjoy a pleasant walk who also sees differently than I do. She or he might not even be a gardener and that’s fine because what I hope they’ll bring with them, and give me a look through, is a perspective on gardens and plants flavored by a background in some field I don’t know. It might be that they travel a lot, practice embroidery, admire calligraphy, know how to jet ski or once studied astronomy. Whatever we don’t have in common, that’s what will make the day most interesting. Together, we’ll see more than we would have.

 

Article by Janet Macunovich and photos by Steven Nikkila, www.gardenatoz.com.

Janet’s Journal: Gardens Talk

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The garden can proclaim your profession or desired career. Would you say the gardener who placed this sculpture to repeat the lines of the tree is in a design field?
The garden can proclaim your profession or desired career. Would you say the gardener who placed this sculpture to repeat the lines of the tree is in a design field?

Our gardens are reflections of who we are as people

…and when you see a Harry Lauder’s walking stick shrub (Corylus avellana ‘Contorta’) pruned into a ball, do you suspect an engineer works on the premises?
…and when you see a Harry Lauder’s walking stick shrub (Corylus avellana ‘Contorta’) pruned into a ball, do you suspect an engineer works on the premises?

by Janet Macunovich /
Photos by Steven Nikkila

First, we talk to the plants. Then, they begin to talk to us. Simply at first—“I need water!”—but eventually they speak with more eloquence—“I would appreciate some micronutrients in my water, darling. And could you see to my friend here? He is making me itchy with his spider mite condition and I’d be greatly relieved if you’d rinse him thoroughly!”

Why was I surprised then, to find that the whole garden begins to tell tales on its gardener? Once I tuned in to the language, I found it was fascinating, a whole new dimension to enjoy.

General-garden and whole-landscape messages follow the same progression from simple to complex that individual plants use as they teach us their language. In the beginning, we may understand only the most obvious statements, such as “This is the door my gardener would prefer you use.” Given time and gardening experience, though, more subtle signs become clear and can apply to almost any issue. These higher-order statements may point us to the best seat in the yard or clue us in to how the gardener in residence really feels about guests—whether he or she truly wants visitors or would prefer they simply stand and look, then go away.

As the gardener becomes more experienced and his or her “vocabulary” of plants and materials grows, the garden becomes more vocal about its owner’s personality. It gives away the gardener who is playful...
As the gardener becomes more experienced and his or her “vocabulary” of plants and materials grows, the garden becomes more vocal about its owner’s personality. It gives away the gardener who is playful…

...an opportunist...
…an opportunist…

The language is most coherent in the true gardener’s garden. As a baby might delight us with playful use of a few sounds, so does a novice planter convey very basic messages of joy or frustration when they work with a flat or two of annuals. Advanced gardeners speak with a much greater vocabulary. Some people wear their hearts on their sleeves. Gardeners grow to display theirs in the landscape.

...an optimist, with new plants waiting to be planted even at Halloween...
…an optimist, with new plants waiting to be planted even at Halloween…

Gardenspeak is not alphabet-based, but more like hieroglyphic or Chinese writing. Since its individual characters are so complex, a good reader can form an overall impression of the message’s tone just from the quality of the writing—whether the glyphs are rendered crudely, with competence, or are works of art. Because the characters themselves are more fluid than letters in an alphabet, it’s possible for a master, using only tiny strokes, to change any ideogram into something quite different in meaning. When we garden we write in just such a complex, liquid code made up of our choice and placement of plants, the composition and condition of our paths, the siting and comfort level of seating, and much more.

In this code our gardens make it quite clear where we spend our time—not just what our favorite spots are in a garden, but where we most often are in the building the garden surrounds. They also describe what seasons of the year are important to us. In the landscape and garden are written a person’s life history—what environment they knew as a child, the schooling they had, what attachments they have to other people, whether they own pets, even what the person’s profession is or might be one day. With practice and a gardener’s eye we can decipher another gardener’s hopes and dreams, personal philosophy, and demeanor.

Before this season ends, while there is time to plan changes for next year, look at what your garden is saying about you!

...or an absent-minded person. (This iris survived over a month above ground!)
…or an absent-minded person. (This iris survived over a month above ground!)

Can this garden make it any more obvious that its gardener has her arms wide open in welcome?
Can this garden make it any more obvious that its gardener has her arms wide open in welcome?

Where you’ve traveled or wish to travel might be spelled out in your garden, in plants and accessories.
Where you’ve traveled or wish to travel might be spelled out in your garden, in plants and accessories.

This garden makes no bones about it, someone in the Knorr house enjoys this window!
This garden makes no bones about it—someone in this house enjoys this window!

Lots of gadgets in a garden might mean the gardener is wise to the ways of technology... or when the gadgets reside on shelves and remain in packages it may mean the gardener or gardener’s family wishes to be more technologically adept!
Lots of gadgets in a garden might mean the gardener is wise to the ways of technology… or when the gadgets reside on shelves and remain in packages it may mean the gardener or gardener’s family wishes to be more technologically adept!

Never be overly concerned about what your garden might say. Take a hint from these gardeners, who have relocated almost every major feature in their garden numerous times—we gardeners just keep on growing!
Never be overly concerned about what your garden might say. Take a hint from these gardeners, who have relocated almost every major feature in their garden numerous times—we gardeners just keep on growing!

Article by Janet Macunovich and photos by Steven Nikkila, www.gardenatoz.com.

Janet’s Journal: Usual Plants, Unusually Grown

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Part 2 of 2

Shrubs grown as perennials and perennials grown as shrubs

This shrub, golden elderberry (Sambucus nigra ‘Aurea’), is cut back to leave just one or two feet of its two main trunks every spring. The result is a compact, golden “perennial.”
This shrub, golden elderberry (Sambucus nigra ‘Aurea’), is cut back to leave just one or two feet of its two main trunks every spring. The result is a compact, golden “perennial.”

Shrubs as perennials

Dwarf spireas can be treated like herbaceous perennials. Cut back to the ground early each April, they still bloom that summer, although a bit later than otherwise. Cut hard in this way, they are also often denser, a bit shorter, and the foliage color may be more intense.
Dwarf spireas can be treated like herbaceous perennials. Cut back to the ground early each April, they still bloom that summer, although a bit later than otherwise. Cut hard in this way, they are also often denser, a bit shorter, and the foliage color may be more intense.

If we grow a shrub for its foliage (barberry, privet, smoke tree and others), or we like the flowers and they are produced on wood that grew just this year (rose of Sharon, beautyberry, potentilla and others), why not cut it back to stubs every April 1, treating it like the herbaceous perennials we leave standing for winter interest? That’s what we can do with all of those on this list. Some of them you already grow this way (butterfly bush, blue mist spirea, Russian sage), and don’t even give much thought to the fact that they’re shrubs. The others on the list are just as amenable to this treatment.

What can you expect will be different about a shrub treated as a perennial? Cut back to nubs every spring, a shrub may be only 2 to 4 feet tall at its height every year—shorter than otherwise, but tall enough for most gardens. Flowering isn’t usually affected except that it may come later in the season than on un-cut shrubs of the same type—not a problem if you added these plants to your garden specifically to continue the floral show after spring and early summer perennials finish their show. The foliage on first-year branches is often larger and more intensely colored than normal, which is a plus. Also, the new wood itself is often more intensely colored than older branches, so shrubs we like for their stem color in winter are even more attractive when treated this way.

Shrubs grown as perennials: 

  • Barberry* (Berberis thunbergii varieties)
  • Beautyberry# (Callicarpa japonica). Purple berries in fall are the attraction.
  • Blue mist spirea or bluebeard#* (Caryopteris x clandonensis)
  • Butterfly bush# (Buddleia davidii)
  • Chaste tree# (Vitex negundo)
  • Dwarf spirea#* (Spiraea x bumalda)
  • Elderberry* (Sambucus varieties with gold or bicolor leaf)
  • Golden vicary privet* (Ligustrum x vicaryii)
  • Panicle hydrangea# (H. paniculata) and snowball hydrangea# (H. arborescens). Please don’t confuse these with other types of hydrangea such as the blue-, pink-flowered or oak leaf types which need two-year-old wood to bloom.
  • Potentilla# (P. fruticosa)
  • Redtwig and yellowtwig dogwood (Cornus alba, C. sericea). Winter stem color is the primary show.
  • Rose of Sharon# (Hibiscus syriacus)
  • Smoke tree* (Cotinus coggygria)

* shrub grown for its foliage
# shrub grown for its flowers (on new wood)

Perennials as shrubs

Some herbaceous perennials are so large and sturdy that they can overwhelm the rest of a garden. Instead of shrubs, they can be used as hedges, specimens, or even foundation plants. The only catch is that they will vacate their spots once a year, either from fall when they die back until early summer when they’ve once again reached the desired height, or if their stems are sturdy enough to stand over winter, we lose them only from early spring when we cut them back until early summer.

One additional feature I require of perennials used this way is that they be long-lived and clump-forming. I want to be able to depend on them to be in the exact same place for a number of years, as I would a shrub.

Perennials grown as shrubs…

  • Boltonia (B. asteroides). 3 to 4 feet tall. White or pink flowers appear almost as a surprise every September.
  • Cup plant (Silphium perfoliatum). 6 feet or more. Produces small sunflowers in July.
  • False indigo (Baptisia australis). 3 to 4 feet tall. Contributes wands of blue flowers every June and can look like a black iron sculpture over winter.
  • Goatsbeard (Aruncus dioicus). 4 to 5 feet tall.
  • Ornamental grasses, particularly maiden grass (Miscanthus varieties) and feather reed grass (Calamagrostis acutiflora). Heights range from 2 to 8 feet. Fall and winter aspects can be stunning.
  • Peony. 3 feet. Hardly bears listing, since it’s almost a usual thing to grow it as a hedge.
  • Perennial sunflower (Helianthus x multiflorus). Cheery single or double sunflowers several inches across, every August. 3 to 5 feet tall.
  • Purple bush clover (Lespedeza thunbergii). 5 feet tall, with great showers of pink flowers every September.
  • Russian sage (Perovskia atriplicifolia). 3 to 4 feet tall.
  • Sedum ‘Autumn Joy’. 18 to 24 inches. Like peony, it hardly bears listing since it’s been in foundation plantings for decades.

Vines as shrubs, trees or groundcover

Climbing hydrangea (H. anomala petiolaris) is a very large vine but can be kept pruned to forms that range from shrubby to tree-form espalier.
Climbing hydrangea (H. anomala petiolaris) is a very large vine but can be kept pruned to forms that range from shrubby to tree-form espalier.

We think of vines when we need to cover a trellis or other vertical surface, but many vines are also happy to cover the ground. English ivy may come to mind right away, but keep an open mind to Hall’s honeysuckle (Lonicera japonica ‘Halliana’) and clematis that can be cut back in spring but still bloom that year (late-blooming species such as C. texensis and C. viticella and fall-blooming clematis C. maximowicziana, C. paniculata or C. terniflora).

If I want a vine to cover the ground and provide flower, too, there are some plants I have to strike off my list. Climbing hydrangea (H. anomala petiolaris), wisteria and trumpet vine (Campsis radicans) will clamber happily on the ground but won’t bloom there. Their flowers come after the plant has established a strong vertical framework with permanent (woody) horizontal side branches.

Some vines can also be convinced with regular pruning to stay in a relatively tight shape like a mounded shrub. With staking, they can even be a small tree. Evergreen euonymus (E. fortunei varieties such as ‘Ivory Jade,’ ‘Emerald Gaiety’ and ‘Sunspot’) is so amenable to use as a shrub that many people don’t even know how beautifully it climbs when given a chance.

A few, such as wisteria, trumpet vine, silver lace vine (Polygonum aubertii), evergreen euonymus and climbing hydrangea, can develop main canes so thick that they can serve as trunks. Strap a sturdy young cane to a strong post, cut off all suckers from the roots and shoots from low on the trunk-to-be, and give it a few years to thicken that cane. Don’t forget, though, that most of these are large plants and so their “crown”—once they’re trained as a tree—will need hard pruning at least once a year to keep it in bounds. Some, such as trumpet vine and wisteria, will also sucker like a wild thing, so it’s wise to site them where they will be surrounded by mowed lawn.

 

Janet’s Journal: Usual Plants, Unusually Grown

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Favorite shrubs-as-trees are species with clean branching, such as this burning bush.
Favorite shrubs-as-trees are species with clean branching, such as this burning bush.

Part 1 of 2

Shrubs grown as trees and trees grown as shrubs

How much do you spend each year to stock your garden with unusual plants? How tall are the stacks of catalogs acquired in pursuit of the latest and greatest?

Here’s an alternative idea: spare your wallet and your green thumb by growing more common, easier things. You don’t have to give up your position on the cutting-edge, though—just grow your commoners in unconventional ways.

You’ve seen this approach if you’ve ever noticed a topiary juniper or Wisteria “tree.” Both are run-of-the-mill plants, one transformed through pruning, the other by staking a stem upright and clipping off all branches except those at the top until the stem is thickened and bare like a trunk.
The beauty of these treatments is that they involve plants that are dependably easy to grow, since all of their quirks and problems are well known. Ordinary plants are so widely available that they’re inexpensive to the point of being expendable. That’s important, since when we grow them in extraordinary ways we need to feel free to experiment. The very ordinariness of these plants also makes it more fun to identify them when people admire them as something special or unique: “Oh that?! It’s just an arborvitae!”

Evergreen euonymus (E. fortunei varieties such as this ‘Ivory Jade,’ ‘Emerald Gaiety’ and ‘Sunspot’) is so amenable to use as a shrub that many people don’t even know how beautifully it climbs when given a chance, or how striking it can be as a small tree.
Evergreen euonymus (E. fortunei varieties such as this ‘Ivory Jade,’ ‘Emerald Gaiety’ and ‘Sunspot’) is so amenable to use as a shrub that many people don’t even know how beautifully it climbs when given a chance, or how striking it can be as a small tree.

Shrubs as trees

My favorites in the unusual usual category are shrubs used as trees.

By “tree,” I don’t mean the horticultural definition of tree—a species generally taller than 20 feet but with just one or a few trunks that last its lifetime. I mean a plant in the form popularly associated with the word—a clean trunk or three, with leaf concentrated at the tops of the trunks. And what I mean by using a shrub as a tree is that we choose a shrub of suitable size—new or existing—and prune it to the classic tree form.

In that way, almost any shrub can be turned into a small tree. Just select one or a few healthy, well-placed canes, cut out all others, and remove side shoots up to the desired height. New canes or side shoots may appear and have to be removed in subsequent years. However, the best candidates for tree-dom, such as yews and bayberry, sucker very little and stop producing low side branches after the first year or two of training.

A definite drawback of tree-form shrubs is that a shrub’s canes are generally not so long-lived as a tree’s trunk. So when I cut a laceleaf buckthorn or staghorn sumac down to just three canes and limb those canes up to five feet to turn it into a small tree, it has to be with the understanding that those canes will last only a limited time – maybe ten years. Something will eventually happen to kill that wood, perhaps insect damage or dieback due to age. I’ll have to watch for the early signs of decline, such as reduced growth or premature fall color on a cane, and then allow a sucker or two to develop at the base of the plant as a replacement cane. Or when its canes begin to fail I’ll remove the shrub and start over with something new.

My favorite shrubs-as-trees are species with clean branching, such as burning bush and viburnum. To grasp what I mean by “clean,” just consider the opposite—something like tatarian honeysuckle (Lonicera tatarica) which consists of little more than a rag-taggle of criss-crossing limbs and clutter of short-lived twigs. It makes an ugly shrub and an even uglier tree.

Shrubs grown as trees—a plant list:

Bayberry (Myrica pensylvanica). Semi-evergreen, fragrant in all parts, glossy foliage. 6 feet tall, sometimes 10.

Blackhaw viburnum (V. prunifolium). 12 to 15 feet tall and wide. Pretty white flowers, fruit for the birds, great fall color.

Burkwood viburnum (V. x burkwoodii). Glossy semi-evergreen foliage and fragrant white flowers in spring. 8 or 10 feet tall.

Burning bush (Euonymus alatus, both the 8-foot dwarf and the 15-foot standard). Often mistaken for a Japanese maple for the horizontal branching and fall color.

Doublefile viburnum (V. plicatum). 8 feet tall with wonderful horizontal branches, double rows of lacy white flowers followed by brilliant red fruits and maroon fall color. Have admired it even as a single-trunked tree (at the Royal Botanical Gardens in Burlington, Ontario). Its stems are only marginally hardy in zone 5 so the trunks may die back unexpectedly unless it’s planted in a protected area.

Sargent viburnum (V. sargentii). Resembles a round-headed 12-foot crabapple, with bright red fruits that last into winter.

Shrub juniper (Juniperus chinensis, spreading forms). The initial task of cleaning off the lower portions of selected trunks can be itchy-scratchy work, but the flat-topped, 10-foot evergreen tree that can be made from a full-grown Pfitzer juniper is worth the effort.

Ural false spirea (Sorbaria sorbifolia). 8 to 10 feet tall with arching canes. I like it for leafing out very early, blooming with white sprays in midsummer that repeat if kept deadheaded, and having an overall lacy look. It is a non-stop suckerer, though, so the task of removing new sprouts from the base never ends.

Witchhazel (Hamamelis species and hybrids). 10 feet. The spring-blooming types have fragrant yellow or red-orange flowers in early spring and incredible fall color. Their branching is so clean they don’t even need pruning to look like a small tree.

Yew (Taxus varieties). Graceful, wide-spreading and feathery even in deep shade. The bark can be outstanding, like burnished cherry.

Part of the fun of growing common plants in uncommon ways is being able to answer, when asked about something that catches the eye, “Oh, that! It’s just an arborvitae!”
Part of the fun of growing common plants in uncommon ways is being able to answer, when asked about something that catches the eye, “Oh, that! It’s just an arborvitae!”

Trees as shrubs

Why turn a tree into a shrub? Usually because trees can be purchased large for immediate effect or offer fast growth that shrubs can’t match.

A tree that will ultimately grow to 35 feet, such as Eastern arborvitae, tends to have a faster growth rate than a shrub that will remain shorter, such as boxwood or Hicks yew. So arbs are widely available as tall plants at garden centers. Someone who wants an immediate, evergreen hedge is likely to buy and plant five-foot-tall arbs, then keep them clipped to size. This tree-as-shrub use is so common I won’t even list plants that can be used this way – just look for them in garden books under “hedges.”

Trees such as arborvitae, falsecypress and juniper are also frequently used to make fanciful topiary shapes.

The trees I want to call your attention to are some you wouldn’t normally think to hedge. Even as I list them you may gasp and say, “Oh, how could you put in such a gorgeous plant and then cut it!” To which I would answer, “If you don’t have room for it as a tree, why not have its leaf color or pretty bloom in a smaller space?”

Leaf color is why tricolor beech (Fagus sylvatica ‘Roseomarginata’) and red leaf Japanese maples make a beautiful hedge, rivaling barberry’s color without the thorns. They grow more quickly than you imagine, too. Of course, they can’t handle the wind and extreme temperatures that barberry can, so site such hedges carefully.

Fall color or bloom is another feature worth hedging for. I’ve kept a franklin tree (Franklinia alatamaha) cut to shrub size for four years now, just to have its camellia-like white flowers in September, without having to commit a tree-sized space to the effort. It often is still blooming in October when the leaves take on their outstanding red to purple fall color. Amur maple (Acer ginnala) and sassafras (watch out for its suckering, though!) can also be kept as hedges and light up the fall scene with their red-orange leaf color.

Then there are the trees that offer winter leaf color, and I don’t mean evergreens. English oak (Quercus robur), beech (Fagus species) and hornbeam (Carpinus betulus) grow faster than many evergreen hedge plants and hang onto their juvenile foliage through winter. Kept clipped as a hedge, they tend to have even more than the usual amount of juvenile foliage, which turns parchment color in late fall. The result is a solid, subtly colored hedge, even in winter.

Stay tuned for part 2 coming in late April.

Article by Janet Macunovich and photos by Steven Nikkila, www.gardenatoz.com.

Janet’s Journal: Eye to Eye With the Worst of the Garden Weeds

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Here’s an intelligence report on some of the most persistent and sneakiest garden weeds of Michigan gardens. To pack the most information into available space, we’ll let pictures and vital statistics do the talking.

Most Persistent

Bindweed, Canada thistle, Ground ivy, Mexican bamboo,
Nut sedge, Scouring rush, Violets, and Wild garlic

These are some of the warriors you’ll have to kill and kill again. They are weeds that cause people to shake their heads even as I answer their question, “How do I get rid of…” The gardener may even smile ruefully while saying over and over, “No, I’ve tried that.”

If you’ve battled these and been beaten, I don’t doubt you’ve tried, but I do doubt that you understood and matched the persistence of your foe. Cut off their heads—their green, leafy source of energy—and they sprout anew from deep, extensive root systems like the mythical beast which sprouted two heads each time one was cut. Each cutting, digging or herbicide application by the gardener puts a drain on the roots’ starch reserves, but each day a new shoot gathers sun, it replenishes those roots. If you attack just once, twice or three times a year and let the survivors surface and gather sun for weeks or months during the cease-fires, you insure a perpetual war.

To best the beasts on this list, beat them at their own game. After you roust out every bit of green and as much root as you can reach, post a guard. Expect new shoots within a week. Find them and cut them before they can return to the root the starch they used in reaching the sun. Be vigilant in this follow up and you will gradually exhaust the weed’s reserves.

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Wild Garlic

Wild garlic (Allium vineale), which hides its narrow foliage among grass blades, can always be identified by its smell. Survives mowing as well as grass, escapes broadleaf weed killers, and stores enough energy in the bulb to return repeatedly if weeders leave the bulb behind. Infestations are usually best handled by killing or digging out all vegetation in the area and then maintaining a thick mulch and a weeding vigil for 18 months.

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Mexican bamboo

Mexican bamboo, Japanese knotweed (Polygonum cuspidatum). Perennial, up to 9 feet tall, spreading far and wide from established clumps by stout underground runners (left). Jointed, hollow stems explain the common name “bamboo.” The center section of stem has been eliminated in this photo for clarity’s sake. Grub out the roots or apply Roundup and be prepared to kill remnant sprouts for a season or two.

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Canada thistle

Perennial, wickedly persistent Canada thistle—Cirsium arvense, which is not native, despite its common name. A stem and a basal clump are shown here, left of the glove. Note the running roots, which can persist and keep sprouting even through a year or two of frequent pulling or spraying with herbicide. The key to control is to be even more persistent than the plant and to adopt as a mantra what Edwin Spencer writes in All About Weeds, “…any plant can be killed—starved to death—if it is not permitted to spread its leaves for more than a few days at a time.” The annual prickly sow thistle (Sonchus aspera), immediately right of the glove, and biennial bull thistle (Cirsium vulgare), far right, are weedy but not nearly so much trouble to eliminate. Just keep pulling or cutting the annual and biennial thistles before they set seed, and keep the area well mulched to prevent existing seed in the soil from sprouting.

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Violet

Violet, common blue violet (Viola sororia). Perennial, often tolerated in gardens for its blue-violet flowers in spring, yet hated for colonizing nearby lawn. A typically schizophrenic approach by gardeners! Either accept it in both places or eliminate it from both. Like ground ivy, it can be killed in lawns with broadleaf weed killer—may take repeated applications—but will then return from seed if the grass is not pampered until thick enough to shade out the seedlings.

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Nut Sedge

Perennial nut sedge or yellow nutgrass (Cyperus esculentus) infuriates gardeners by returning even if pulled and pulled again. But of course it returns if the soil is not loosened deep and well so that the brown nut-like tubers come out, too. In the inset photo, note the horizontally-running root, which turns up to produce a second clump of “grass” and the new crop of nuts developing as white bulbs at root tips. Nuts can rest dormant for many years in the soil and be revived by deep excavations. Frightening to think nut sedge tubers are edible and somewhere a large-tuber form may be in development as a food crop!

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ground-ivy-0615Ground ivy

Ground ivy, also called gill-over-the-ground, is Glechoma hederacea, a perennial. It snakes through lawn, rooting where its stems make contact with bare soil. In gardens, freed from a mower’s restraint, it explodes to become a dense mat and can weave its way 18 inches up into stems of other plants. Shallow-rooted, it’s easily pried loose from beds and mulch will prevent it from reestablishing by seed. However, it must also be banned from adjacent lawns. The broadleaf weed killer Trimec will kill it, but the lawn must then be overseeded and thickened by better care lest ground ivy seed simply sprout and re-take the bare soil between grass plants. Sometimes confused with henbit, an annual.

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Scouring rush

Field horsetail, or scouring rush (Equisetum arvense), is a native perennial often brought into gardens in tree and shrub root balls. Easiest to eradicate if caught early in its tenure on a property, otherwise it must be dug and surviving pieces starved by repeated pulling.

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Bindweed flower

The trouble with focusing on flowers for identification is that the worst weeds—long-lived perennials that are slow to begin blooming—can become entrenched before we know what we’re facing. Once great bindweed (Convolvulus sepium) is large enough to show its two-inch white or pinkish flowers, it’s so well-grounded that its removal will require a two- to
three-year pitched battle.

 

 

 

 

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Bindweed

Convolvulus sepium, the great bindweed (pictured) and its smaller-flowered, smaller-leaved, lower reaching cousin C. arvensis, small-flowered bindweed. Perennial. Extensive, deep, easily broken root systems. My own experience mirrors that of W. C. Muenscher who writes in the textbook Weeds, “Clean cultivation…if performed thoroughly, will control bindweed in two years. The land must be kept black, that is no green shoots should be allowed to appear above ground. Cultivation should be at frequent intervals of about six days. Under certain conditions this time may be extended a few days and under other conditions it may have to be shortened to three- or four-day intervals.

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Sneakiest

Enchanter’s nightshade, Glossy buckthorn,
Pokeweed, and Yellow wood sorrel

These weeds earned places on this list by their tendency to present a false face or ride in on invited guests. Once their true natures and their avenues of entry into a garden are known, they are relatively easy to eradicate with informed pulling and thorough mulching.

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Pokeweed

Pokeweed (Phytolacca americana) is an impressive, statuesque plant draped in purple-black berries in fall. Birds love this native fruit – although it is quite toxic to humans – but gardeners wish their feathered friends would eat all of the berries before they fall and then not excrete any! This photo shows the berries of an established plant – up to 9 feet tall and wide – and the roots of seedlings just 4 months old (center) and one month old (right). The roots don’t run but they do delve deep, so pull them early or be prepared to dig deep.

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Enchanter’s nightshade

The native perennial, enchanter’s nightshade (Circaea canadensis) is rarely seen in sunny gardens but can drive a shady gardener wild, especially when the buried seeds ripen (right photo). In seed, it seems to pull out easily and completely, but careful loosening of the soil before pulling will reveal the new, white, nearly-detached perennial roots (left photo) which can lie quietly until the next spring.

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Glossy buckthorn

Glossy buckthorn (Rhamnus cathartica) is a small tree with very bad habits. It leafs out early in spring and keeps its leaves far into fall, effectively shading out native plants wherever it sprouts. Since it can thrive in woods, sun, wet areas and dry, it’s a serious threat to native ecosystems of all kinds, as well as gardens. The seeds don’t travel far on their own. Birds eat and then drop them where they roost so the trees are common along fence lines. Fast growing, the gardener must patrol for and pull them at least once a year, and try to locate and remove the mature plants which are providing the shiny black berries. One thing gardeners can be thankful for is the plant’s shallow, fibrous root system – far easier to pull than other woody weeds such as mulberry and tree of heaven.

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yellow-wood-sorrel-0615Yellow wood sorrel & Common wood sorrel

Yellow wood sorrel, right, (Oxalis europaea) seems frail and easy to pull, compared to its ground-hugging cousin, common wood sorrel, below, (Oxalis stricta). But like enchanter’s nightshade, the yellow wood sorrel has a deceptive root system. Pull it and it seems to come up easily, roots and all. Yet if one loosens the soil well before pulling and uses a light touch, it becomes clear how many fragile, white, running perennial roots can be left behind by the uninformed gardener. Far easier to deal with is the common wood sorrel, which does not spread below ground but only above where stems sit on moist soil and root (the pen points to such a stem).

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Dangerous Plants: A Healthy Respect Will Keep You Healthy

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If you crush the stems or foliage of Virginia creeper, do not allow the juices to get on your skin.
If you crush the stems or foliage of Virginia creeper, do not allow the juices to get on your skin.

My hobby-turned-profession has brought me up close and too personal with so many surprisingly dangerous plants that I’ve cultivated a downright awe of plant defenses. Each time I encounter another plant-based allergic reaction, skin irritation or chemical burn, my library and files swell with more books and articles. In pursuing one or another plant, I’ve come across cautions on so many other, common garden plants and said “Ah ha, so that’s what that other thing might have been!” so many times that I thought you would be interested in some of the discoveries too.

In listing these plants I do not intend to put an end to your enjoyment of any plant, but to point out where precautions might be in order. You’ll probably even find that to eliminate all potentially harmful plants from your garden or landscape would be very difficult, simply because so many plants have potential to cause harm. Better to learn safe ways to interact with plants—wear gloves, cover your arms and legs while pruning and gardening, wash well after being in the garden, and eat only known edible plants.

So knowledge is your best defense against plant defenses, and you should be prepared to learn more every time you add another plant to your garden or yard. Start by learning the several categories of dangerous plants: 1) those we shouldn’t allow to contact our bare skin, 2) those with pollen or other airborne elements that can cause distress if inhaled, and 3) plants we shouldn’t eat.

When you rub fennel (top), Queen Anne’s lace (above left), or rue (above right), on your skin, then stay out in the sun, a burn-like rash will appear. Growing any of these plants is good reason to cover your arms and legs when working in the garden.
When you rub fennel (top), Queen Anne’s lace (above left), or rue (above right), on your skin, then stay out in the sun, a burn-like rash will appear. Growing any of these plants is good reason to cover your arms and legs when working in the garden.

Plants we shouldn’t allow to contact our bare skin

Of these three groups, we are most likely to come across those that irritate or inflame the skin on contact. That’s because we often expose bare skin when we garden and it’s not necessary to be allergic to react to many of them. The trouble with these plants are chemicals in their saps, thorns or prickles, or needle-like crystals contained in the cells which can seep out when the plant is bruised or cut.

Plants with irritant sap. These should be handled carefully if they must be cut. Avoid getting sap from cut stems or bruised leaves of any of the following on your skin:

• Buttercup (plants in the genus Ranunculus)
• Clematis
• Daffodil (Narcissus species)
• Daphne (D. mezereum)
• Euphorbias, such as gopher or mole plant (E. lathyris) and myrtle euphorbia (E. myrsinites)
• Marsh marigold (Caltha palustris)

If you think you may have contacted the sap, flush affected skin with water and wash it with a mild soap. Hydrocortisone cream may help relieve the irritation if it develops. Seek medical attention if the reaction is severe.

Phototoxic plants. Some plants have sap or oil that is not in itself irritating, but once on the skin and exposed to any sunlight, it can cause a chemical burn. The burn can be severe enough to raise blisters on sensitive skin, such as on the face or on a young child. The worst reactions happen after gardening on hot, sunny days since heat tends to bring the most oil to leaf surfaces and sun is the trigger to burning on the skin. If you have noticed burn-like marks or felt a burning sensation after a day’s gardening, you may have come into contact with:

• Angelica
• Bishop’s weed (Ammi majus)
• Celery (Apium graveolens)
• Chervil (Anthriscus cerefolium)
• Fennel (Foeniculum vulgare)
• Fig (Ficus species)
• Gas plant (Dictamnus albus)
• Hogweed (Heracleum species)
• Lime (Citrus species)
• Lovage (Levisticum officinale)
• Masterwort (Astrantia species)
• Parsley (Petroselinum crispum)
• Queen Anne’s lace (Daucus carota)
• Rue (Ruta graveolens)

Keep your arms covered and face averted when you cut down that ravenna grass each spring, since the edges of the blades are sharp enough to inflict serious damage.
Keep your arms covered and face averted when you cut down that ravenna grass each spring, since the edges of the blades are sharp enough to inflict serious damage.

Prickly plants. We tend to be careful around plants with visible thorns such as roses, firethorn and barberry, but here are some with tiny but irritating bristles or sharply serrated leaf edges that may not alarm us until we handle them without gloves or brush against them:

• Prickly pear cactus (Opuntia species)
• Hops (Humulus lupus)
• Ravenna grass (Erianthus ravennae)
• Redtwig dogwood (Cornus sanguinea)
• Stinging nettle (Urtica dioica)

Other plants that cause contact dermatitis in some people may do so because of the bristly nature of their leaves (see list below).

Tiny spines, as from cactus, can be removed by applying and removing adhesive tape or spreading and allowing white glue to dry on the skin, then peeling it off.

Plants containing needle-like crystals. Intense, painful itching can come from bruising or cutting these plants, because their cells contain needle-sharp crystals:

• Elephant’s ear (Colocasia esculenta)
• Dumb cane (Dieffenbachia species)
• Pothos (Epipremnum aureum)
• Heartleaf philodendron (Philodendron scandens)
• Virginia creeper and Boston ivy (Parthenocissus species)

Perhaps our best defense against dangerous plants such as poison ivy is to learn to identify them and steer clear of them!
Perhaps our best defense against dangerous plants such as poison ivy is to learn to identify them and steer clear of them!

Plants that cause allergic dermatitis. Some plants contain chemicals or have surface irritants which trigger allergic rashes in some, but not all people. Generally, reactions occur after the person becomes sensitized to the plant—it may take one or many contacts with a plant over many years to develop the sensitivity. The skin reacts most severely and most quickly where the most contact occurred, so that some parts of the body may “erupt” in a rash or blisters hours or days before another.

Poison ivy (Toxicodendron radicans) and its relatives cashew (Anacardium occidentale), smoke tree (Cotinus species), mango (Mangifera indica), and poison sumac (Toxicodendron vernix) are the most famous of these because they produce the most severe reaction among the widest range of people, but many other cultivated plants have been reported by doctors as causing irritated or inflamed skin. These include:

It’s hard to believe that something so universally loved as a magnolia can also be a dangerous plant. Yet some people are allergic to it, and develop a rash on contact with it.
It’s hard to believe that something so universally loved as a magnolia can also be a dangerous plant. Yet some people are allergic to it, and develop a rash on contact with it.

• Artemisia (including the most notorious member of the genus, ragweed)
• Aster
• Balsam fir (Abies balsamea)
• Black walnut (Juglans nigra)
• Black-eyed Susan (Rudbeckia species)
• Blanket flower (Gaillardia species)
• Bleeding heart (Dicentra species)
• Castor bean (Ricinus communis)
• Daisy (Leucanthemum species)
• English ivy (Hedera helix)
• Feverfew (Matricaria species)
• Fleabane (Erigeron species)
• Garlic (Allium sativum)
• Gingko (Gingko biloba)
• Golden marguerite (Anthemis tinctoria)
• Helen’s flower (Helenium autumnale)
• Hyacinth (Hyacinthus species)
• Hydrangea
• Lady’s slipper (Cypripedium species)
• Magnolia
• Marigold (Tagetes species)
• Moses-in-a-boat (Rhoeo spathacea)
• Mullein (Verbascum species)
• Mum (Dendranthema/Chrysanthemum species)
• Oleander (Nerium oleander)
• Osage orange (Maclura pomifera)
• Pawpaw (Asimina triloba)
• Potato
• Primrose (Primula species)
• Purple heart (Tradescantia pallida)
• Tansy (Tanacetum vulgare)
• Tomato
• Trumpet vine (Campsis radicans)
• Tulip (Tulipa species)

Plants we shouldn’t inhale. 

Plants with airborne pollen, such as ragweed, grasses and many conifers, can cause allergic respiratory distress. Those who suffer from pollen allergies should garden and landscape with plants visited by bees, moths, butterflies and hummingbirds, because such plants have heavy pollen which does not float but needs a lift to the next plant. Hosing down areas before working or playing outdoors can also be helpful, as wet pollen is less likely to waft into the air.

Plants we shouldn’t eat.

Although garden plants that, if eaten, can cause severe intestinal distress, nervous disorders and even death may get the most publicity of all dangerous plants, they are the most easy to live with—just don’t eat them! Never taste or eat any plant unless you are certain of its identity and safety.

Some plants are more dangerous than others, for various reasons. Tiny quantities of one species such as monkshood can cause great harm, while large quantities of another such as apple seeds or privet berries must be eaten to produce even mild side effects. In a few poisonous species such as anemone, calla, caladium, and Jack-in-the-pulpit, the symptoms are called “self-limiting,” meaning that it’s very tough to eat enough of the plant to cause life-threatening trouble since the plant is extremely distasteful or causes immediate burning and blistering on the tongue and lips.

The result of eating some toxic species may be gastrointestinal distress, which may be serious in young children and weakened adults, but may amount only to a tough lesson learned to other people. Some plant-produced toxins can cause circulatory or nervous system disorders as well and so are more serious. Some plants are toxic from top to roots, such as water hemlock. In others, poisons are concentrated enough to cause serious harm only in certain parts of the plant, even unlikely parts to eat, such as cherry and peach pits which contain cyanide.

Here are some of the most dangerous poisonous plants you may be growing, or which may be growing wild in your area, and the toxic parts:

• Adonis (Adonis species) – all parts
• Baneberry/Doll’s eyes (Actaea species) – berries and roots
• Buttercup (Ranunculus species) – sap
• Castor bean (Ricinus communis) – seeds
• Chinese lantern (Physalis species) – unripe fruits
• Daphne (Daphne mezereum) – all parts
• Datura, Jimsonweed, Angel’s trumpet, Devils’ trumpet (Datura and Brugmansia species) – all parts
• Fall crocus (Colchicum species) – all parts
• Flower tobacco (Nicotiana species) – all parts
• Foxglove (Digitalis species) – all parts
• Golden chain tree (Laburnum species) – all parts, toxins concentrated in seeds
• Hydrangea – flower buds
• Japanese andromeda (Pieris species) – leaves and nectar
• Lenten rose, Christmas rose (Helleborus species) – all parts
• Leucothoe – leaves and nectar
• Lily-of-the-valley (Convallaria majalis) – all parts, including water in the vase in which the flowers are held
• Monkshood (Aconitum species) – all parts
• Mountain laurel (Kalmia species) – leaves and nectar
• Oleander (Nerium oleander) – all parts, including water in the vase in which the flowers are held
• Pokeweed (Phytolacca americana) – leaves and roots
• Rhododendron and azalea (Rhododendron species) – leaves and nectar
• Star of Bethlehem (Ornithogalum species) – all parts
• Water hemlock (Cicuta species) – all parts
• Yew (Taxus species) – all parts except red portion of fruit

Janet Macunovich is a professional gardener and author of the books “Designing Your Gardens and Landscape” and “Caring for Perennials.” Read more from Janet on her website www.gardenatoz.com.

Lunacy: Does it hold sway in your garden?

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Left: The moon rules the tides. Right: Does it also rule the growth of these plants?
Left: The moon rules the tides. Right: Does it also rule the growth of these plants?

Arranging your gardening according to the phases of the moon

 

Article by Janet Macunovich and photos by Steven Nikkila

Lunacy. Spoken of a person, it means mental derangement and irrational actions. Use it in relation to plants and it means scheduling farm or garden chores according to an orderly celestial pattern.

Two very different definitions. Or are they?

Lunacy is a traditional method of synchronizing one’s sowing, tending and reaping with the predictable phases of the moon and luna’s position relative to the constellations of the zodiac. A lunatic will plant perennials in the week following a full moon because he or she is assured by lunatic tradition that those plants will prosper better than perennials planted during the second week after a full moon.

If that follower of the moon has either a thoroughly practical background in sky-watching or an almanac which lists the moon’s phase and position in the zodiac for each day of the year, he or she may also decide to plant only on the third and fourth days of that week. That would happen because the moon was “in” the constellation Scorpio during those dates. Lunatics maintain that the moon in such a position exerts a prime and positive influence on plants.

Sound confusing? I looked deep into lunacy this winter. I came away skeptical but still interested, enough so to offer my findings to you. I outline the basic principles of lunacy and specifics for this spring’s garden chores in the chart on page 34.

Above and below: Lunar gardening stipulates that perennials will grow best long term if planted in the week following the new moon.
Above and below: Lunar gardening stipulates that perennials will grow best long term if planted in the week following the new moon.

perennials2-may-15I have viewed lunacy as I do the predicting of ocean tides for 3 reasons.

First, tidal predictions and planting calendars were both so important to early man that natural events were scrutinized and religiously recorded for countless generations to improve the accuracy of those forecasts.

Second, predicting both lunar and tidal events requires specialized calculations of a type legible only to those who have passed a course or two in higher math and astronomy. As one not initiated to those ways, I’ve closeted both issues in a mental nook labeled “Tides and Lunacy: information occasionally needed; obtain current schedule from almanac.”

Finally, and probably most importantly, the moon figures prominently in each of these disciplines yet in neither case can I describe the connection without making it sound like magic is involved. I first have to ask that the reader accept gravitational theory, that the moon is responsible for the sloshing of water back and forth across Earth’s ocean basins. I would present this as a scientific fact even though I can offer no simple proofs and so it may feel to you as it does to me—like an item of faith. Having done that, how can I fail to be equally serious about lunar influence on herbaceous plant cells? After all, they’re 95 percent water and quite pliable. The moon’s effect on these tiny watery bodies may lack the scientific proofs of tidal study, but it seems equally plausible to me.

Since the tomato is an annual that bears fruit above ground, the moon’s influence will be most positive on it if it’s planted between the time of the new moon and the full moon.
Since the tomato is an annual that bears fruit above ground, the moon’s influence will be most positive on it if it’s planted between the time of the new moon and the full moon.

Thus I think there must be something to lunacy, even if it is scientifically “soft” where tide prediction is “hard.”

I’ve found the two to be drastically different in practical application, however. I have recalled and used my “Tides and Lunacy” notes now and then, about as many times regarding tides as lunacy. Yet where checking on tides yielded a clear result, my attempts to employ the moon to better my garden were not so conclusive.

For instance, I checked an almanac when we planned to visit an Atlantic beach with water-loving, but wave-shy toddlers. Without question and just as foretold in the chart, it was low tide when we arrived. Yet I was unsure of the result when I planted according to lunar lore for a faster, better yield from peas. The seedlings seemed to appear quickly and the plants to be very productive, but I couldn’t be sure of either, lacking differently-timed peas as a comparison.

I keep looking for science in lunacy, though. First I read a no-till farming association’s report that fewer weeds sprouted in test fields cultivated at night than fields tilled by day. Then I wonder if this might be once-removed proof of the lunatic prediction that a bed weeded in the week before new moon (the dark of the moon) would stay weed-free longer than if weeded at another time. In night tilling, seeds receive dim moonlight rather than bright sunshine. Weeding on a date when there will be no moon means less total light reaches the seeds during their first 24 hours than if the moon did shine. So, both the no-till tests and the lunatic procedure involve less total light reaching weed seeds early on. If that first 12 or 24 hours is critical to weed development and if seeds can be shown to accumulate light-hours in the same way growing plants do, there might be something here.

Despite the nebulous connection between lunatic lore and results, serious lunatics have failed to conduct credible scientific studies that might cement the two. Believers seem to prefer to keep building upon that base as if it was rock steady.

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The moon may be a bigger part of your garden than you imagine.

It might be understandable that this happened in the past. Then, priests and priestesses schooled in reading the sky and naming dates advised their flocks when to plant or harvest. In return for this basic, good information, the soothsayers received food, clothing and homage from a community. Perhaps succeeding generations of farmers, having memorized all the basic lessons such as “plant in May, not March,” began to request more in return for their support of the learned few. Maybe priests and priestesses truly observed such advanced lunacy, such as flowers planted in Libra and asparagus set out in Taurus growing better than the same crops started at other times, and passed this along. Or maybe some individuals fabricated some of this advice just to “sweeten the pot,” knowing the facts wouldn’t be tested by the simple folk who received that “added value.”

This second situation could explain some of the discrepancies of modern lunacy, such as “plant all perennial crops in the 3rd quarter” and “plant annual crops with seed outside the fruit such as asparagus in the first quarter.” Asparagus is a perennial. That’s undeniable. That it was assigned to a group of plants with “seed outside the fruit”—a vague concept never fully explained in lunatic tomes—may have been the work of a clergyperson desperate to be kept on!

Significantly, those who promote lunacy today—most notably, the publishers of lunacy books and farming almanacs—have not seen fit to invest any of the coin we’ve offered up to them to conduct even rudimentary scientific tests. Instead, the books and almanacs admonish us to “conduct tests and let us know what you find.”

So here I remain, on the fence but still leaning toward the moon. I want to believe that those seeds which popped up in half the predicted time were pulled by the waxing moon and that I will see the same result again if my garden ever depends on it. Yet I don’t have enough need for quicker, better crops to justify spending the time combing the almanacs, determining the best dates for this or that, and making tests.

I hope you have fun this year in your new view of the moon. And who knows? Maybe some loony thing you do will net you the tastiest tomato or huskiest hollyhock ever!

Janet Macunovich is a professional gardener and author of the books “Designing Your Gardens and Landscape” and “Caring for Perennials.” Read more from Janet on her website www.gardenatoz.com.

 

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