Results from trusted professionals
Reach out with any questions to unh.pdl@unh.edu or 603-862-3043.
- No cannabis samples.
- If you are interested in a particular molecular test, please contact the lab first to see if it is available.
- 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 $20 sample fee.
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.
Articles
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.
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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...
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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.
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Events
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October 16, 2024, 6 p.m. - 8 p.m.
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October 18, 2024, 9 a.m. - 11 a.m.
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October 23, 2024, 4 p.m. - 6 p.m.
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October 29, 2024, 9 a.m. - 3 p.m.
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October 29, 2024, 6:30 p.m. - 8 p.m.
Resources
Gibbera twig blight is known to affect blueberries in Merrimack, Sullivan, Cheshire and Grafton counties of New Hampshire. This disease will affect fr...
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Black death of hellebore, a virus disease affecting hellebores in nursery and home gardens, was found in a nursery in Grafton County, New Hampshire, i...
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In the summer and fall of 2023, blueberry leaf rust was found widely distributed in New Hampshire, including Merrimack, Hillsborough and Strafford cou...
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Exobasidium leaf and fruit spot of blueberry is a fungal disease affecting both leaves and berries. Symptoms matching this disease were reported in se...
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Leaf spot is one of the important fungal diseases on cherry trees in the United States. The disease mainly affects the leaves; the pathogen will cause...
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Several celery samples from high tunnel production with leaf curl have been identified by the UNH Plant Diagnostic Lab; this disease causes significan...
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