Michael Mills gardens in Northwest Philadelphia, concentrating on ornamentals and shade planting. He is a board member of the Greater Philadelphia Chapter of the American Rhododendron Society, is involved with exhibits at the annual Philadelphia Flower Show, and regularly contributes plants to the Pennsylvania Horticultural Society's plant dividend program for members.
His column appears Fridays in Home & Design, alternating between questions-and-answers and "It's time to . . . ," a compendium of what garden tasks are appropriate for the season.
- Cataloging the barn stars of Penna.
- Holiday or anytime, no exceptions
- LifeStyle
Be selective when cutting back perennials. Leave part if not all of the growth on the following, which helps them survive winter: ornamental grasses, evergreen ferns, Lobelia cardinalis (cardinal flower), chrysanthemums, perennial geraniums, nepeta (catmint), euphorbia (spurge), Chelone lyonii (turtlehead).
- Cataloging the barn stars of Penna.
- Holiday or anytime, no exceptions
- LifeStyle
Question: Over the last several years I have had an increasing problem with mushrooms growing in my lawn. They are ugly looking things, 2 to 8 inches in diameter, brown or blackish in color rather than white. If I chop them out they return in a matter of weeks/months, and recur each year.
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Continue to divide perennials. Plant any new purchases promptly. Continue to plant deciduous shrubs and trees. Get those bulbs in the ground. Daffodils, tulips, et al, need time to put out roots. Tulips aren't as needy, so save them for last. But don't keep them in your hot, dry house; garage or porch is much better.
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Question: Do you have any specific tips on techniques to wrap fig trees for the winter? - Heather MenzelAnswer: The lengths to which people in cold climes have gone to get a fig tree - so much happier in a Mediterranean climate - through a temperate zone winter are amazing. One elaborate idea is to dig up the fig, then dig a shallow trench
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Be kind to houseplants that spent the summer outside. Frost may be weeks away (or just a few days), but the plants will do better if brought indoors now. Lessen the shock by putting them in the coolest room for several days. This weekend, wash them (use the shower) and examine each individually, removing bugs and yellowed growth. Ants living in the pots can be driven out by submerging the entire pot in water for several hours. Repotting can wait till spring.
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Question: I would like to propagate my coneflowers by planting the dry heads or seeds now. But I read online some confusing reports about their having to go through a cold period. Can I plant the seeds now?
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Start getting ready for 2010. Decide which projects you need to accomplish before the frost comes and which can wait. With weekends often fully booked and darkness now more than 12 hours a day, be realistic with your plans.
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Question: I saw drifts of cyclamens in bloom in France, and I want them for my garden. Will they survive in the Philadelphia area? If so, where can I buy the hardy variety? Haven't seen them in any garden centers I've tried.
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Get back into planting mode. Longer, cooler nights greatly lessen the stress of summer heat. For existing flower and shrub beds, decide what needs to be removed, either because of decline over the weirdly wet summer or inappropriateness regardless of the
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Question: After several years of not growing hollyhocks because they got an orange spotted blight on their leaves, I've tried again. And, again, the hollyhock leaves are covered with orange spots. Can you help?
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Make plans for the autumn planting season, which may not have the quicker gratification of spring but is superb for installing spring- and summer-blooming perennials and shrubs, which undergo less stress as they settle in. Get rid of lousy performers, which means more room for tempting new varieties. (Fall bloomers are best admired, with an eye to acquisition in spring.)
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Question: I live in Ocean City, N.J., and my 30-year-old blue hydrangeas turned pink this year. What did I do wrong? My grandmother always told me that rusty nails or other rusty items would keep them blue.
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