Rosie Lerner

rosie@purdue.edu

716 articles by this author

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Poison Ivy : A Variable Pest

Rosie Lerner, Purdue Consumer Horticulture Specialist Released 17 June 1999 Perhaps you’ve heard of the old saying? “Leaves of three, let it be?” Excellent advice for those who are sensitive to the poison ivy plant. A Perplexing Plant Poison ivy, Toxicodendron radicans, is generally a woody plant with three leaflets; that is, each individual leaf is subdivided into three leaf-like structures. But that’s where the generalizing ends. Poison ivy can be a vine growing up…Read more about Poison Ivy : A Variable Pest[Read More]

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Propagate Trees and Shrubs from Cuttings

If you’d like to have a few more of those prized lilac shrubs in your yard, now’s the time to put your green thumb to work. Many ornamental shrubs and trees easily can be propagated by stem cuttings. Cuttings taken from the succulent, new growth that occurred this spring also are referred to as softwood cuttings. These cuttings usually root easier and faster than cuttings taken from harder wood later in the season. However, softwood…Read more about Propagate Trees and Shrubs from Cuttings[Read More]

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June “In The Grow”

Recent columns about animals visiting your gardens sparked a great deal of mail. I’ll print some of the letters here, but I want to remind you that many of these suggested changes may keep the animals away for only a short time. If food supplies are scarce, your garden visitors will munch on soapy, hairy or peppered tomatoes. In addition, some home remedies can be dangerous. (Imagine the oft-repeated “remedy” concerning gasoline in mole holes!)…Read more about June “In The Grow”[Read More]

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May “In The Grow”

Q. Last season, I spread about 6 inches of hardwood sawdust on my pumpkin, squash and gourd garden to control weeds. The sawdust is still there and will act as a mulch for this season also. By using the sawdust, do I need to add any nutrients to my soil this season? If so, what should I add? – Myrna Sowers, Crawfordsville, Ind. A. Uncomposted sawdust ties up the available nitrogen in the soil, so…Read more about May “In The Grow”[Read More]

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April “In The Grow”

Q. I’ve been out in the backyard giving myself a backache chopping down ornamental grasses. We love them 363 days a year; every day except for the two that we spend chopping them down and getting rid of the debris! Any thoughts? – Amy Raley, West Lafayette, Ind. A. We buzz down our ornamental grasses with electric hedge shears and a chain saw. The task goes by quickly! We leave the dried grasses in place…Read more about April “In The Grow”[Read More]

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March “In The Grow”

Q. I just read your column addressing a question on how to keep raccoons out of sweet corn. Have you ever tried a radio? We run a long extension cord to the garden (we tried batteries, but that was too expensive), put the radio inside a garbage bag to protect it from the weather, tune in to a talk show and turn it up very loud. (We tried a music station, but that didn’t bother…Read more about March “In The Grow”[Read More]

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Late Winter Recommended for Pruning Chores

If you’re itching to get outdoors and work on your garden, now is a good time to survey your landscape and decide what needs pruning. But keep in mind that not all plants need to be trimmed. Landscape plants should be pruned to maintain or reduce their size; to remove undesirable growth; to remove dead or damaged branches; and to rejuvenate older plants to produce more vigorous foliage, flowers and fruits. In some cases, pruning…Read more about Late Winter Recommended for Pruning Chores[Read More]

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February “In The Grow”

Q. I am wondering what happened to my tomato plants this past year. Early in the season, they started getting yellow leaves at the base of the plant. Then, the leaves dried up; the complete plant almost turned that way. I have them caged, and they grew way above the cages. The tomatoes seemed to be good, but the plants were terrible. Hope you have an answer. – Mrs. Otis Rupright A. Fusarium and Verticillium…Read more about February “In The Grow”[Read More]

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Deicing Salts Harmful to Plants

Deicing salts can save your neck this winter, but they can spell disaster for landscape plants. Whether the salt is sprayed on the plants from passing traffic near the road or is shoveled onto plants near the sidewalk, the salt can cause damage. Salts can adversely affect plants in several ways. Salts deposited on the surface of twigs, branches, and evergreen leaves can cause excessive drying of foliage and roots. They can be taken up…Read more about Deicing Salts Harmful to Plants[Read More]

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Snow Is Good News For Gardeners

Though your aching back may not agree, recent heavy snows actually will be good for your garden and landscape. Snow provides moisture as well as protection from cold and wind. Snow is an excellent insulator against low temperatures and excessive winds. The extent of protection depends on the depth of snow. Generally, the temperature below the snow increases by about 2 degrees F for each inch of accumulation. In addition, the soil gives off some…Read more about Snow Is Good News For Gardeners[Read More]

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