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Plant & Insect Diagnostic Laboratory About the Plant Clinic

WSU Puyallup Plant & Insect Diagnostic Laboratory

WSU Research and Extension Centers are currently open to the public by appointment only. Please call 253-445-4582 or email to make an appointment.

Digital Means

The lab encourages the use digital means for diagnostic purposes when practical. Digital diagnosis samples may be assessed a fee based on work provided by the diagnostician.

  • Please email clear photos of the damaged plant or the insect.
  • For plant problems, images showing the plant in the landscape often provide additional clues as to the cause of the problem.
  • Photos showing the base of the plant at the soil line may also be illuminating when trying to determine root issues.
  • These images should be accompanied by information describing the problem and the plant care (who, what, where, when, why are great questions to explain).

Physical Samples

  • Samples can be mailed to Plant & Insect Diagnotic Lab, WSU Puyallup, 2606 West Pioneer, Puyallup WA 98371 or deposited in or near the cooler/drop box on the south side of Kalkus Hall (three-story brown wood-siding building on upper campus). Please email should you drop off a sample. Thank you.

Jenny Glass, Diagnostician
253-445-4582 office

About the Plant Clinic

Examination scope

The Washington State University Puyallup Plant & Insect Diagnostic Laboratory is committed to helping the citizens of Washington State resolve their troubles with plants and insects through accurate problem diagnoses. We also provide applicable management options to a numerous state clientele like commercial growers, pest control operators, home gardeners, consultants, county agents, Master Gardeners, and research personnel.

The laboratory is currently equipped to handle samples from Washington State, particularly western Washington State, and not from other areas of the country.

To achieve an accurate diagnosis of the problems, samples should be accompanied by detailed information about the problem. Go to How to Submit a Sample for additional information. Services will not be provided without payment of diagnostic fees.

Clinic Calendar

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Jenny Glass
Diagnostic Plant Pathologist
Washington State University
Puyallup Research & Extension Center
2606 West Pioneer
Puyallup, WA 98371-4998
253-445-4582 office

Cannabis leaf

Please Note: We cannot accept cannabis samples due to WSU compliance with Federal policy. Industrial hemp samples MUST be accompanied by Washington State Hemp Producer’s License.