Do not send every Ohio State plant-related sample to the Wooster clinic address. The Plant and Pest Diagnostic Clinic’s submission page separates general plant submissions from turfgrass and nematode routes, with the latter two directed to Columbus facilities. Submission instructions
Identify the destination before packing
| Sample route | What the current instructions distinguish |
|---|---|
| General plant submissions | Wooster mailing route at 234 Selby Hall, 1680 Madison Avenue |
| Hand-delivered plant samples | Coordinate the visit with the clinic first |
| Turfgrass diagnostic request | Separate Columbus turfgrass clinic |
| Nematode diagnostic request | Separate Columbus soybean pathology and nematology laboratory |
The clinic’s name includes “C. Wayne Ellett”; that name alone is not an instruction to bring every sample to a Wayne County office. Use the sample category and its linked request form to choose the route. Category-specific destinations
Send the history with the specimen
Prepare a brief history before collecting or shipping: plant identity if known, location, when symptoms appeared, how many plants are affected, and recent treatments. Label uncertain observations as uncertain.
The clinic requires the appropriate request form and asks for a complete history of the specimen, symptoms and surrounding plants. Its general guidance favors still-living material showing symptoms and, where possible, different stages of the problem. History and collection requirements
Read the category-specific packing instructions before collecting; this guide does not replace them. A specimen that is correctly addressed can still be unsuitable for analysis.
For digital questions and relevant images, the page lists ppdc@osu.edu. Ask the clinic to resolve an uncertain category before paying to ship material. No laboratory result, current fee or guaranteed response time was established for this guide.
Sources and method
Local Service Ledger checked the cited institutional records on September 7, 2026 and assembled the reader worksheet above. A destination matrix distinguishes coordinated Wooster plant dropoff from the separate Columbus turf and nematode routes, preventing a plant-clinic name from becoming an incorrect shipping address. No interview, site visit or individual service transaction was conducted.