Cooperative Extension: Plant Disease Diagnostic Lab

Important Notice:

The Plant Disease Diagnostic Laboratory is operating but our doors remain closed to the public to reduce exposure to others. Upon arrival, you will see phone numbers that you can call in order to leave us a sample. Use this submission form for plant samples.

To contact the University of Maine Cooperative Extension Plant Disease Diagnostic Lab, call 207.581.3883 or email

The Plant Disease Diagnostic Lab and the Insect ID Lab are also still accepting digital samples sent by email. Submissions must include your name, phone number, business name, county, host plant, problem, date when symptoms were noted and good, in-focus images.

The Plant Disease Diagnostic Lab is part of the Pest Management Unit within the new UMaine Cooperative Extension Diagnostic and Research Laboratory.  The lab is also a part of the National Plant Diagnostic Network.

Diagnostic Lab Personnel:

  • Dr. Alicyn Smart, DPM — Plant Pathologist & Director of the Plant Disease Diagnostic Laboratory
  • Aashish Dhungana — UMaine undergraduate student, Lab Technician III
  • Sarah Dorey — UMaine undergraduate student, Lab Technician III
  • Ruby Bonilla — UMaine undergraduate student, Lab Technician I

Additional Resources:

Donate to UMaine Extension’s Plant Disease Diagnostic Lab

How to submit plant disease samples via email

We are located at 17 Godfrey Drive in Orono, Maine, just off from Interstate 95, Exit #193 (not far from the Black Bear Inn).


(see notice above) 8:00 a.m. – 4:30 p.m., Monday-Friday (closed holidays)