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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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For houseplants, go easy on the water

Question: I’m told I’ve been over-watering our houseplants, yet we have sprigs of plants rooting in jars in nothing but water. How can a plant be over-watered when it can also be rooted and flourish in water? And how do you know when you’re watering too much?

Snake plant

Snake plant – Sansevieria trifasciata

Houseplant experts agree that over-watering can have a detrimental effect on houseplants. Soil that stays too wet causes the plant’s roots to rot, and invites fungi that thrive in moist conditions. That’s why it’s important to grow houseplants in pots with adequate drainage, and to allow the soil of most plants to dry between waterings.Different houseplants also have different water requirements, and many need less water in winter when they are growing more slowly. Before you add water, poke a finger into the soil, and only water the plant if it feels dry. Or push a wooden chopstick into the soil, and if it’s not damp when you pull it out, water the plant. It is better for a plant to have too little water than too much, but you also want to make sure it doesn’t wilt.

As for plants rooting in water: many fleshy plants will quickly develop roots in plain water and can later be planted in soil. Ideally, as the roots develop, the water is kept clean by being changed frequently. But if they are kept in water long enough, even those plants that seem to thrive for awhile will eventually lose vigor and may rot, too.

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