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Archive for the hosta tag

There are more options for shade gardens than just hostas

April 6, 2022   •   Leave a Comment

Coral bells (foreground) and lungwort (background) are both effective plants for shade gardens.
Coral bells (foreground) and lungwort (background) are both effective plants for the shade garden. (Photo: Terra Nova Nurseries)

by P.J. Baker

If you have quite a bit of shade at your house, everyone says, “Oh, you want hostas. That’s what grows in shade gardens.” Well, if you go out in the woods in Michigan you will find many flowers, but no native hostas. Native to China and Japan, hostas are wonderful shade plants. Used in combination with other shade plants, or using 2 to 3 different hostas together, they can be beautiful.

I have a shade garden that is so full I do not have room for anything else. However, there are no hostas—there is no space left to plant them. I have flowers all summer long and interesting foliage when there are no flowers. My hellebore (Lenten rose) starts blooming in March, with or without snow, and it is evergreen. I like it under trees. The only maintenance is cutting off old dead leaves in the spring. Another early bloomer that has variegated foliage is lungwort (Pulmonaria). These have blue and pink flowers in April or May. This groundcover looks great even when not flowering. Note that it can spread easily by seed.

Perennials

Some of my favorite perennials for shade are columbine, astilbe, brunnera, coral bells, foxglove, epimedium, geranium and various ferns. Astilbe flowers at different times and if you get several different hybrids, there can be one blooming most of the summer. Some also have reddish leaves and all have lacy foliage. The flowers of brunnera look like forget-me-nots. Coral bells have many variegated and ruffled edges on their foliage. Geranium likes sun or shade, often has fragrant foliage, and has different bloom times. These perennials are just a few of many that are available.

Grasses

There are also several grasses that can be planted in the shade. This also adds winter interest; the dead flower heads are lovely all winter. Cut most grasses to ground level in the spring. Several grasses for shade are Northern sea oats, tufted hair grass, variegated purple moor grass, Japanese forest grass (Hakonechloa), and many types of sedges. These grasses range in height from 6 inches to 3 feet. The foliage is found in an assortment of colors such as blue, yellow, green, and variegated.

Bulbs

Bulbs for the shade include Spanish bluebell, fritillaria, Italian arum (Arum italicum), dog’s tooth violet or trout lily, winter aconite, and great camas (Camassia leichtlinii). Camassia is a native bulb used by Native Americans for food. For interesting variegated foliage in winter and beautiful orange berries, use the Italian arum. Most of the bulbs bloom in the spring for a lovely early show. Then in late June after the foliage turns yellow, you can plant shade annuals in the area and have an all-summer show.

Annuals

There are many annuals that can be used in the shade besides impatiens and begonia. I like coleus, with its striking foliage, and torenia.

Shrubs

Shrubs are a staple of the garden and there are several that prefer the shade. If you have a protected area on the north or east side of your house, plant broadleaf evergreens. These include rhododendrons, azaleas, kalmias, and euonymus. There are evergreen and deciduous hollies (winterberry) that also have berries for winter interest.

More shade shrubs include fothergilla, summersweet, smooth hydrangea, panicle hydrangea, oakleaf hydrangea, and Virginia sweetspire. Hydrangeas also offer winter interest with their dead flower heads. If needed, the smooth and panicle hydrangeas may be cut down to about 12 inches in the spring. Some offer great fall color. Oakleaf hydrangea turns red in fall, although because of winter injury it may not flower every year; do not cut it down in the spring. Fothergilla turns yellow in fall. Virginia sweetspire is native and turns reddish-purple, often persisting into winter.

I encourage you to study and look around your neighborhood for a summer before you start your shade garden. Put a plan on paper; you will be grateful you spent the time planning your garden. You may decide to include hosta plants, or like me, you may find you ran out of space.

RELATED: Janet’s Journal: Shady Goings-on

ELSEWHERE: Made in the Shade Garden

Filed Under: Feature Tagged With: coral bells, hosta, lungwort, shade gardens

Can I grow ivy groundcover under trees?

February 16, 2022   •   1 Comment

English Ivy
English Ivy

We have a beautiful 32-year-old maple tree in our backyard and a city locust tree on the boulevard in the front yard. It is difficult to grow grass under both trees. If we planted ivy as a groundcover, would it hurt the trees if it climbed up them? My neighbor had some voracious vine grow up his mountain ash and the tree died.

The age of your maple tree suggests a large trunk and root flare with heavy shade. Turf grass needs sun and water, both of which the maple tree takes first with its mature canopy and characteristic surface root system. Give up on growing grass under it. Apply two inches of composted mulch between the root flares out to the canopy drip line. Keep the compost and mulch away from the trunk and off the root flares. You can then “pocket plant” shade-tolerant perennials like hosta and liriope, which will grow comfortably in those conditions, offer seasonal bloom, and give you an interesting, low maintenance groundcover.

One can grow grass under a locust although they too are shallow-rooted. If you thin out the canopy to allow more sunlight to reach the ground, a shade turf seed mix can work if the area is properly prepared. However, a boulevard takes heavy abuse from vehicles and weather. You may be better off applying the mulch method to the locust as well. The liriope is both sun- and shade-tolerant and will handle some road salt applied in winter. There are also creeping junipers that hug the ground and give you conifer presence all year. The key is to plant away from the tree trunk.

Any kind of climbing ivy is difficult to control. Their accelerated rise within a tree’s canopy crowds out the tree leaves. The tree loses its food production source that feeds its roots, which in turn feed the branch scaffold. The tree literally starves and dies, as witnessed in your neighbor’s yard. 

RELATED: Groundcover that handles foot traffic

Filed Under: Ask MG Tagged With: groundcover, hosta, ivy, liriope, locust, maple, trees

Hostas have new growth with different leaves

July 18, 2016   •   Leave a Comment

I planted a variety of hostas 4 to 5 years ago. A couple have new side growth that is different from the parent plant. Would these plants be a cross from two different hostas or are they reverting back to the original plants that they were hybridized from?

Hostas are hardy, easy-to-grow, shade-tolerant perennials known primarily for their beautiful foliage. Their leaf color can be affected by the amount of sun the leaves receive: a variegated variety planted in full shade tends to turn to solid green during the summer and come back up variegated the next spring.

They can sometimes backmutate: new shoots revert back to one of the parents. Well over half the varieties were found as “sports” or mutations on existing cultivars. A sport occurs when a plant mutates into a different color leaf pattern. For example, a gold hosta may sport to a gold with a green edge, or any other number of color pattern changes. The reason that so many sports are found is that they are genetically fairly unstable. A new term has been coined for folks who intentionally indulge in this new and popular pastime of looking through nurseries for these mutations: “sport fishermen.”

Hostas can also be grown from seed. Just like people, their offspring will not look exactly like their parents, but they will share a few of the same characteristics. The leaf color of the seedling will be derived from the color in the center of the leaf of the parent plant (grandparents are included here also). Green varieties will usually produce green offspring, blue varieties will produce some blue, some green, and some gold offspring. Gold hostas will produce some of each also. Edged variegated hostas will not produce variegated offspring. Only cultivars that have white streaks (streaky) in the center of the leaf will produce variegated offspring. White-centered cultivars will produce all white hostas which usually die due to a lack of chlorophyll.

Related: Hostas: sun vs. shade

Roadtrip: Check out the Hosta Hillside at Hidden Lake Gardens

Filed Under: Ask MG Tagged With: backmutate, hosta, hostas, leaf, leaves

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