Deadly Rose Rosette Disease Moves Across the Country
by Delisa White

Rose gardeners throughout the country need to be vigilant in watching for the symptoms of an increasingly common problem known as rose rosette disease.   >> read article
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First Aid for Summer Squash
by Bob Westerfield

As we enter mid-July with August right around the corner, there are some pretty rough-looking summer squash patches that I have visited around the state in my role as a vegetable specialist. From backyard gardens to commercial growers, everyone that has grown summer squash knows the challenges that the late season can dish out ...   >> read article
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Impatiens Disease Spurs A Hunt For Shady Alternatives
by Susan Martin

Impatiens—for years they have been your go-to solution for providing brilliant color in the shade. Bedding impatiens is by far one of the most popular annuals for shade. Drive down a shady lane and you’re bound to see these colorful pink, red, salmon, purple and white annuals bordering beds and pathways ...   >> read article
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10 Most (Un)Wanted Pests and What to Do about Them
by Douglas A. Spilker, Ph.D.

They don’t have their photos hanging on the post office walls, but these garden pests are notorious. Here are the ‘Most Wanted’ of the Midwest garden, their rap sheets and how to bring them to justice ...   >> read article
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Branch Rot of Annual Vinca
by Stephen Vann, Ph. D.

Branch and stem rot can be a major disease problem for annual vinca (Catharanthus roseus) once the disease organism has been introduced into the residential or commercial landscape environment. This disease is caused by a soil-borne fungus called Phytophthora parasitica that can persist in the soil for several years. Under conditions of overhead watering or heavy rainfall, this disease can spread rapidly in a vinca planting. The fungus is often ...   >> read article
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Common Diseases of Landscape Trees & Shrubs
by Douglas A. Spilker, Ph.D.

What’s that spot on the leaves? Or that fuzzy stuff? Why are the leaves falling off? Here’s how to tell whether your woody plants are really sick or just have a little case of fungus.   >> read article
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The Gall of it All
by Douglas A. Spilker, Ph.D.

Galls are the enlargement of plant tissue caused by injury or irritation by parasitic organisms such as insects, mites, nematodes, fungi and bacteria. They are also interesting looking — knotty, lumpy and sometimes colorful. Learn which ones are common in your garden.   >> read article
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Rose Black Spot
by Stephen Vann, Ph.D

Rose black spot is perhaps the most devastating disease of roses in the South. This disease is caused by a fungus (Diplocarpon rosae) that attacks the foliage of many rose varieties in home landscapes. Many dedicated rose growers battle black spot year after year. The disease can flare up virtually anytime of the year when the leaves remain wet for a period of six or more hours at a time. Frequent rainfall with cloudy days or periods of high humidity can result in disease onset.   >> read article
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