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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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Hellebores for winter blooms

Every year I see Lenten roses blooming in my friends’ gardens in December, and I intend to grow some in my own garden. When is the best time to plant them?

Hellebores The Garden Bench

The blooms of Lenten roses – hellebores – are welcome in a garden when everything else is dormant. They are tough plants, with evergreen foliage and flowers that bloom in January and February (or, as you note, as early as December). The flowers of established plants generally last well into spring.

Middle Tennessee plantsman Troy Marden includes hellebores (Helleborus x hybridus) in his Southern Gardener’s Handbook, in the chapter on Perennials for the South. He notes that fall is a good time to plant Lenten roses. They can grow in a bed that’s partly shady, and they do best in rich, well-drained soil.

Hellebores may grow slowly at first, but once they’re established they quickly get bigger. Marden suggests a dose of composted manure or organic fertilizer in spring to encourage lush growth and abundant blooms the next year. They also self-sow, and the young seedlings can be dug up and transplanted in spring.

Reminder: It’s tree-planting time

Fall’s cooler weather signals the start of tree-planting time.

“It’s better to plant while the tree is dormant, after the leaves are gone,” says Randall Lantz, landscaping and horticulture superintendent for Metro Nashville Parks and Recreation. Strong root growth is important for the tree’s survival, and after leaf drop, the trees can put their energy into growing roots without having to support the top, he explains.

ball burlap treesSurvival also depends on planting the right tree in the right place.

“Look at your neighborhood and see what’s thriving all around, and also determine what kind of space you have,” says Lantz. “Think about whether you need a small tree or a ‘canopy’ tree, which can be very large.

When it’s time to plant, keep these guidelines in mind:

∙ Most trees need good drainage, so make sure the spot you select drains well.

∙ Don’t plant too deep. A young tree with its root ball wrapped in burlap should be planted a couple of inches higher than the soil level. “Trees tend to settle after they’re planted,” Lantz explains.

∙ Dig a hole that is several inches wider than the root ball (ideally, it should be about twice as wide), with a flat bottom, at a depth that is an inch or so less than the height of the root ball. Place the root ball in the hole and backfill with native soil.

∙ Finally, water the newly planted tree well to settle the soil around the root ball. Trees planted in fall and winter will be ready to grow and thrive next spring.

In Saturday’s Tennessean: Belmont Mansion’s Central Parlor goes back in time; Adelicia would feel right at home.

Enjoy the crisp fall weather. Tap here for a list of garden tips & tasks for November.

 

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