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Plant Disease

Solving tomato problems

Written by Rhonda Ferree, retired horticulture educator Tomatoes are the most popular vegetable grown in the United States, said a University of Illinois Extension horticulture educator. "They are probably one of the easiest vegetables to grow, but no vegetable is problem proof," said...
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Tree Cankers and Vascular Wilts on the Rise

Written by Rhonda Ferree, retired horticulture educator As I've written in previous blogs, the droughts of 2012 and other recent weather events continue to take a toll on tree health. Trees can take three to five years to show symptoms from a severe event such as drought. Unfortunately...
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Bizarre oak leaf damage

Written by Rhonda Ferree, retired horticulture educator Every year I get questions about bizarre oak leaf damage that most people think is caused by a terrible insect infestation. Although some insects feed on oak trees, often the samples I see have a condition called Oak Tatters. I have...
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Does my tree have Emerald Ash Borer?

Written by Rhonda Ferree, retired horticulture educator The dreaded Emerald Ash Borer (EAB) continues to cause havoc across Central Illinois. All four of the counties that I cover as a Horticulture Educator with University of Illinois Extension are included in the quarantine area, which...
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Tomato Woes

Written by Rhonda Ferree, retired horticulture educator Although typically very easy to grow, tomatoes are prone to some problems. According to Rhonda Ferree, extension educator in horticulture, University of Illinois Extension offices are receiving many questions right now concerning the...
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Fairy Rings

Written by Rhonda Ferree, retired horticulture educator Do you have fairy rings in your yard? After reading this article you might decide that you do. Fairy rings are an interesting situation that is quite noticeable this time of year. Fairy ring usually appears in the lawn as circles or...
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