I have Lilies and Tulips left over from Easter – what can I do to make sure they bloom again next year?

Leave the lillies and tulips in the house until the weather warms. Plant them outside, remove the flower heads and allow leaves and stem to yellow, then remove. Fertilize with bonemeal or Holland Bulb Booster. Most tulip varieties are not considered dependable perennials in Michigan. The chances of your tulips returning successfully for several years depends on whether or not sufficient food reserves can be returned to the bulb. This can be accomplished by cutting off the flowers as the petals drop (do not allow them to go to seed), fertilizng as soon as they finish flowering, and most importantly, leaving the foliage intact as long as possible. That will allow the bulbs to develop to their full potential, next year.