Commercial Turfgrass Clinic

Due to COVID-19, our laboratory building is closed to the public until further notice and staff are working under a modified operation status.  Diagnosticians for the Plant and Pest Diagnostic Clinic labs continue to process samples, but hours in the lab are limited per State mandate. All staff remain available during work hours via email and voicemail. Please be patient as you may experience slightly longer response times.

Samples from agricultural and other commercial growers and clients will be prioritized over residential samples. Residential clients are encouraged to initially send (at no charge) photographs of unhealthy plants, plant pests, or plant/weed identifications to our diagnostician, Meg Williamson, at If an identification cannot be made from photographs, the residential client may then send a physical sample to the lab, which will be charged the usual sample fee. 

Samples may be shipped to our building via UPS, FedEx, and USPS. Please limit weight of packages to 10 pounds or less. IMPORTANT: staff will only be in the lobby to receive packages on Tuesdays, Wednesdays, and Thursdays.  Shippers should select a method and shipping date that will ensure packages arrive on one of those days of the week. Samples may also be dropped off at our building’s drop box located at our rear loading dock, which also houses sample forms, bags, and other supplies. Please notify Lab Coordinator Diana Low ( or (864) 646-2133) when a sample is placed in the drop box.

Per declaration of the State Entomologist, until further notice we will not accept samples for Insect Identification of a biting/stinging nature unless submitted in ethanol by a physician, public health official, or pest control operator.

We thank you for your understanding of our compliance with these important public health measures mandated by the State of South Carolina and Clemson University.

The Clemson University Commercial Turfgrass Clinic is located in our upstate laboratory in Pendleton, SC.  This service is provided to golf courses, athletic fields, sod farms and other turf management professionals who desire expedited diagnostic services. 

For samples submitted with the Commercial Turfgrass form, we will make every effort to provide a diagnosis with management recommendations within 48 hours.  In cases where isolations to detect pathogens are required, the initial response will most often be a preliminary report giving a suspected diagnosis and any other available information.  In these cases, a final diagnosis, including management recommendations, will be provided as soon as diagnostics are completed.