The Plant Diagnostic Clinic at the University of Delaware accepts plant samples showing signs or symptoms of disease. The Clinic is housed in the Department of Plant and Soil Sciences at the University of Delaware in Newark , and operates as a function of Delaware Cooperative Extension.

2010 Delaware Cooperative Extension Ornamentals Short Course Offerings - Follow the link below to the course descriptions and registration information 2010 Delaware Cooperative Extension Short Courses Click here for: Information on Rust Diseases of Wheat and Barley for Delaware   Dec 2009 Pythium Root Rot on Poinsettias Production of poinsettias can be severely affected by Pythium root rot.  Symptoms include reduced growth, off color leaves, and wilting of leaves (sometime on one side of the plant).  If plants are pulled out of the pot, roots may look dark and water-soaked.  Sanitation and a clean water source is critical in preventing this disease.  Severely affected plants should be discarded.  Fungicide drenches may help manage root rot if applied early. Follow this link to general Plant Disease Info General Plant Disease Fact Sheets Review the Sample Submission Guidelines Sample Submission Guidelines Sample Submission Form can be Printed From the Left Menu Late Blight Update 1/29/10 -  The late blight pathogen survives on live host plant material.  ***Infected potato tubers could serve as a source of infection next spring.***  Remove and discard infected plant tissue from gardens. Practice good sanitiation. Late blight, a disease caused by the fungus-like organism Phytophthora infestans, was found in Delaware this season on potato plants, and on tomato plants in backyard gardens throughout the state. The wet weather favored spread of this disease.   Late Blight on Potato Tomato leaf with late blight (lower leaf surface) New Fact Sheet on Downy Mildew of Basil Available: 6/29/2009 Nancy Gregory PP-47   Soybean Rust USDA ipmPIPE Site Photos of Soybean Rust    2008 Delaware Plant Pathology Results and Reports Bulletin 2007 Delaware Plant Pathology Results and Reports Bulletin