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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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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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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