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Ohio Plant Diagnostic Network

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- Important Sample Submission Update - 

Beginning August 1, 2022, the C. Wayne Ellett Plant and Pest Diagnostic Clinic will not be receiving diagnostic samples at the Reynoldsburg location. Any packages that are already in route to the Reynoldsburg location will be brought to the Wooster location as they arrive. For more information, please see the PPDC page.

The Ohio Plant Diagnostic Network is a collaboration between the Ohio Department of Agriculture (ODA) Plant Health Diagnostic Laboratory, and Ohio State's C. Wayne Ellett Plant and Pest Diagnostic Clinic (CWEPPDC). The ODA Plant Health Diagnostic Laboratory and the CWEPPDC are the founding members of the Ohio Plant Diagnostic Network (OPDN). The OPDN unites the diagnostic, research, and outreach activities from all over Ohio into one organized and effective communication tool.

ODA Plant Health Diagnostic Lab

The Plant Health Diagnostic Laboratory analyzes plant and soil samples collected by ODA inspectors, from nurseries, orchards and other state agencies shipping in, out and within the state of Ohio. The Plant Health Diagnostic Laboratory does testing for viral, bacterial, fungal, oomycete, and nematode pathogens, as well as the identification of  insect pests requiring containment conditions.

The C. Wayne Ellett Plant and Pest Diagnostic Clinic

The C. Wayne Ellett Plant and Pest Diagnostic Clinic (CWEPPDC) is a diagnostic laboratory specializing in the identification of plant diseases, plant health issues, and insect related problems. The Clinic offers a broad spectrum of low-cost testing for residential and commercial clients to identify pests and cultural/environmental related plant health issues. Experienced diagnosticians collaborate with specialists in plant pathology, entomology, and horticulture and crop science. The CWEPPDC is also a member of the National Plant Diagnostic Network (NPDN). NPDN is a nationwide consortium of diagnostic laboratories that enhances agricultural security by rapidly detecting and monitoring pests and pathogens.

The OSU clinic is housed in the ODA Plant Health Diagnostic Laboratory at the ODA Plant Health Division, and shares space and equipment with the ODA Lab.

Testing Services

The Clinic is a fee-based service laboratory, and analyzes samples from the public, farmers, managers, and consultants. The lab staff can identify and diagnose plant diseases, insects, insect damage, environmental plant injury, and nematodes. The Clinic also allows you to send images of plant diseases or insects for diagnosis.