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Plant & Insect Diagnostic Laboratory Submitting Samples

Are any of these scenarios familiar?

  • The rhododendron leaves are drooping but watering is not fixing the problem…
  • Ants are discovered in the crawlspace and you worry about potential damage…
  • Large dead spots suddenly develop on your well-manicured lawn…
  • The apple tree fails to bear and next year you want a better crop…
  • Large holes are being eaten from the hosta leaves but you haven’t seen a bug…
  • An unknown weed is taking over the flower bed and needs to be controlled…

If you are experiencing any of these problems or similar ones, then you may benefit from plant problem diagnosis and insect identification help provided by the WSU Puyallup Plant & Insect Diagnostic Laboratory.

How To Submit A Sample

The WSU Puyallup Plant and Insect Diagnostic Laboratory is a facility for receiving samples submitted for identification or diagnosis of plant and insect related problems. This laboratory provides diagnostic assistance to private businesses and the citizens of Western Washington and supports the work of Washington State University Extension programs. The diagnostic laboratory is equipped to handle:

Insect IdentificationInsect IDIdentification of insect and insect-pest problems.
Plant IdentificationPlant IDIdentification of unknown plants and weeds.
Plant Problem DiagnosisPlant ProblemsDiagnosis of samples related to plant damage.
Turfgrass DiagnosisTurfgrassDiagnosis of samples related to turf damage.

Please Note: We cannot accept cannabis samples due to WSU compliance with federal policy.