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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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Continue to care for new shrubs in winter

We planted aucubas and hollies in the spring and kept them watered all summer, and they’re doing well. Do we need to water them in winter, too?

Aucuba japonica

Replenish mulch at the base of spring-planted aucuba and other shrubs.

Spring-planted shrubs that received regular water should be well-established by fall, so you can cut back on the amount of water they receive. But don’t neglect them completely. It’s a good idea to replenish the mulch, adding enough so that it’s about three inches thick. Mulch holds moisture in the soil, and also keeps it from freezing and thawing as temperatures swing from cold to warmer and back again. Remove any dead or diseased leaves from under the shrubs before you add mulch, and remember not to pile mulch up against the trunk.

One other winter grooming tip: If you have deciduous trees in the area that have dropped leaves onto the shrubs, take time to remove the leaves, especially if there are so many that they would block the sun.

As I mentioned in last week’s question-and-answer, a yard-full of leaves is a good source of mulch for those shrubs. Chop them with the mower before you spread them on the ground under the shrubs.

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