Pest Plants

Poison Ivy – Herbicides

Several herbicides will kill poison ivy. Triclopyr (Brush-B-Gon) kills kudzu and brambles as well as poison ivy. Non-selective weed killers like Round-Up, Finale or Next Day will kill poison ivy, too. With care, spot spraying can take the offending vines...

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Wisteria – Control

Its flowers are gorgeous but the nature of a wisteria vine is to conquer everything around it. Cascades of lavender or white blooms announce that the vine has woken up after a winter nap and is poised to start climbing...

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Smilax ID and Control

It has wicked thorns, it laughs at herbicides and it always seems to come back, no matter how much you pull it out of your shrubs each spring. Nobody smiles when smilax vine appears The pest is smilax (deer thorn,...

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Lichens

Every kid (and most adults) can remember being falsely blamed simply because they were standing nearby when an accident happened. Although accidents do seem to happen more often when kids are present, it’s erroneous to assume that they are the...

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Lichen Quiz

PETER RABBIT? Here is a quick trivia question: What do Peter Rabbit, canaries and moose have to do with lichens? It turns out that Beatrix Potter, the author of the Peter Rabbit tales, was also a respected biologist. She was...

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Air Potato

Q: I have a problem with a lovely but horribly invasive vine that grows little potatoes on its stem. It sprouts and spreads like a demon – nearly taking over a 3 acre lot! What is it and what can...

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Virginia Copperleaf – Identification and Control

Q: What is this weed in my garden? A: It’s Virginia copperleaf, Acalypha virginica.  It is an annual weed, which means it can be prevented with the proper pre-emergent chemical. The best pre-emergent for broadleaf weeds is dithiopyr (click for sources). Apply the chemical in...

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