Plant Diagnostic Clinic

The University of Missouri Plant Diagnostic Clinic (PDC) has been serving Missouri since 1965. We assist county Extension Specialists, commercial businesses and private citizens with their pest problems. The PDC is capable of plant disease diagnosis (including turfgrass) and identification of unknown plants and insects (including arachnids). Besides clinic staff, a diverse group of Plant Sciences faculty specializing in agronomy, entomology, horticulture, or plant pathology assist with identification of pests as needed. The clinic is open year round to receive samples. 


Remote video URL
Watch MU Plant Diagnostic Clinic Sample Submission Instructions on YouTube.

Plant Diagnostic Clinic Submission Instructions

Peng Tian, the director of the University of Missouri Plant Diagnostic Clinic (MU PDC), and Mizzou alumna, Morgan Goodnight, present instructions on how to prepare the plant sample and use the online resources to submit sample information.

The PDC does not test plant nutrient levels, soil characteristics or identify nematodes. Samples submitted to the clinic requiring these tests can be forwarded to the respective lab, at your discretion, additional fees will apply.

The Plant Diagnostic Clinic provides identification and management solutions in a written report for:

  • Plant Disease 
  • Turfgrass Disease 
  • Plant/Weed Species 
  • Insect/Mite Species


PDC Clinic Blog (January - April 2019)

Lists of the diseases diagnosed by plant type

PDC Clinic Blog (January - July 2018)

Representatives of sample submissions and highlights of plant diseases diagnosed at the University of Missouri Plant Diagnostic Clinic

PDC Clinic Blog (June - October 2018)

Lists of the diseases, disorders and pests diagnosed by plant type and weed identification

1100 University Ave.
28 Mumford Hall
Columbia, MO 65201