Plant and Insect Diagnostic Clinic

How to Submit a Sample

Get tips for submitting each sample type before you send to the clinic.

Submission Forms

Each sample you submit must be accompanied with a submission form. 


We recommend mailing your sample, but dropoffs are welcome during business hours.

Services We Offer

Here are the types of samples we accept for diagnosis: 

  • Whole plants or plant part problems
  • Insects, spiders, ticks, mites, and other arthropods from outdoors/indoors
  • Soybean cyst nematode egg counts
  • Complete soil nematode counts

Services We Do NOT Offer

  • Weed/plant identification (contact your local Extension office for help)
  • Tick disease testing
  • Mushroom identification
  • Pesticide residue testing
  • Soil and plant nutrient analyses 
  • Insects or arthropods causing skin irritation in humans or animals
  • Herbicide resistance testing

What We Do

Iowa State University Plant & Insect Diagnostic Clinic is supported by funding from ISU Extension & Outreach, ISU Department of Horticulture, ISU Department of Plant Pathology, Entomology, & Microbiology, ISU Integrated Pest Management, and the National Plant Diagnostic Network.