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  • March garden tips & tasks

    If your fescue lawn looks a little skimpy, overseed early this month. Fescue grows best when the weather is still cool.

    Clip dead stems from perennial herbs – thyme, sage, lavender, rosemary. Pruning encourages vigorous new growth.

    Prune nandinas, flowering quince and other airy shrubs by reaching in and removing about a third of the branches at ground level.

    Remove mulch or leaves that may be covering perennials in garden beds.

    Prepare a new garden bed: Have the soil tested (check with your county’s Extension service). Remove grass and dig or till soil 8 to 10 inches deep and mix with soil amendments and organic matter to improve drainage.

    Add fertilizer lightly to perennials as soon as you see new growth. Too much fertilizer may result in lanky growth.

    Herb transplants that don’t mind cool weather -- parsley, cilantro, sage, oregano – can go in the ground now.

    When you cut daffodils to bring inside, cut the stems at an angle and place them in water right away. Change the water in the vase daily to keep them fresh longer.

    Save the date - Middle Tennessee garden events

    The Perennial Plant Society's annual Plant Sale will be April 8, opening at 9 a.m. at The Fairgrounds Nashville. The sale offers newly released and hard-to-find perennials from top local nurseries -- more than 450 varieties of perennials, vines, grasses, shrubs and annuals. The event supports local scholarships for Tennessee horticulture students and monthly gardening programs, open to the public, at Cheekwood Botanical Gardens. For information visit www.ppsmtn.org.

    The Herb Society of Nashville's annual Herb Sale will be April 29, 9 a.m. - 2 p.m. at The Fairgrounds Nashville. The sale will offer heirloom vegetables, rare varieties of perennial and annual herbs, handmade pottery herb markers and more. To learn more, visit herbsocietynashville.org.

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Celandine poppies bloom in spring

I have a shade garden and would love to have celandine poppies. What’s the best way to grow them?

Celandine poppyCelandine poppies, or wood poppies, (Stylophorum diphyllum) are among the prettiest flowers in a shady woodland garden in early spring. Tall stems with bright yellow flowers grow from clumps of lobed leaves in late March, April and May, before developing fuzzy seedpods. This native wildflower grows well in moist, slightly acid humus-rich soil.

When conditions are right, Celandine poppies grow and spread easily. Nashville wildflower expert Margie Hunter, in her book Gardening with the Native Plants of Tennessee, notes that they “readily self-sow” (other sources describe this as becoming “weedy”).  “If germination gets out of hand, just snip off the large seedpods before they open,” Hunter writes.

Consequently, they are also easy to share. Divide them in spring, or start them from seeds in a cold frame in the fall.

In today’s Tennessean: Sage, thyme and lavender are just a few of the herbs that can look as good in the landscape as they taste in the kitchen. See the story on double-duty herbs in today’s Tennessean and at Tennessean.com.

April is also a great time to get out and meet other gardeners. Check out the Events calendar at left, and in my newspaper column at Tennessean.com.

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