Plant Diagnostic Lab

  • close-up of plant leaf

Results from trusted professionals

Reach out with any questions to unh.pdl@unh.edu or 603-862-3043. 

  • The plant diagnostics lab is now offering testing for plant pathogens present in water samples.
  • The plant diagnostics lab is now offering molecular diagnostic services in addition to traditional morphological services.
  • Please contact the lab with inquiries about specialized molecular testing before submitting your sample. 
  • The plant diagnostics lab does not process Cannabis samples at this time.
  • Expect 7-10 business days for results.  Reports will be emailed to the address provided on the form.  Be sure to check your spam folder for the report and call/email with any questions! 

Each sample must include a sample submission form and the submission fee. 

  • $20 for traditional morphological diagnosis only
  • $60 for traditional and molecular diagnosis
  • $60 for plant pathogen testing of water samples

Download Sample Submission Form

Getting Your Samples to Us

Mail
UNH Plant Diagnostic Lab
Barton Hall
34 Sage Way
Durham, NH 03824

Drop Off

Barton Hall is open to the public daily from 8 a.m. - 5 p.m. Monday-Friday.  Follow the signs & head upstairs to Barton 206.  You may leave your plant sample with a form with anyone in the lab OR leave it in the blue sample drop off boxes outside of the lab door. 

 Do not drop off plant samples in the soil drop off box outside of Barton Hall.  We are unable to process plants samples from that box because they degrade too quickly. 

How to Package Submissions to the UNH Plant Diagnostics Lab

Articles

Tyler Edwards in lab
Welcome Tyler Edwards
Tyler Edwards Joins Extension as the Plant Pathology Program Manager
UNH Extension is pleased to announce the hire of Tyler Edwards as the Plant Pathology Program Manager. Learn More
UNH Extension Can Help You Diagnose Plant Problems
UNH Extension Can Help You Diagnose Plant Problems
What do you do when you encounter a plant problem such as disease or abnormal growth in the landscape? You or a client may find a problem occurring w... Learn More
Bo Liu portrait
Welcome Bo Liu
Bo Liu, Ph.D., joins UNH Extension as the Director of the UNH Plant Diagnostic Lab and State Extension Specialist
UNH Extension is pleased to welcome Bo Liu, Ph.D., as our Plant Diagnostic Lab Director and State Specialist. Learn More

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