Plant Disease & Diagnosis

  • close-up of plant leaf

Update: 05/12/22


The UNH Plant Diagnostic Lab is almost ready for you!

We are currently moving into our new space in Barton Hall on the UNH Campus.  We will begin to accept samples from the public in June.

Check back here for more updates, and to access our new and updated submission form as it gets closer to our opening date.

If you have any questions, feel free to reach out to the PDL’s new director, Dr. Emran Ali at emran.ali@unh.edu or  the PDL’s diagnostician, Madeleine Hassett, at madeleine.hassett@unh.edu.

In the meantime, growers may continue to send samples to the Maine Diagnostic Laboratory:

Please visit the University of Maine Cooperative Extension Plant Disease Diagnostic Lab website for submission forms and contact information.

UMaine Plant Disease Diagnostic Lab sample submission form

How to send a sample to the UMaine PDDL

You can also watch this video for tips on submitting samples to a diagnostic lab

Commercial clientele should contact the UMAINE lab directly.

Home gardeners should first contact the Extension Education Center

Phone: 1-877-EXT-GROW (398-4769)
Email: 
answers@unh.edu

We appreciate your patience and cooperation during this time of transition and appreciate your support for UNH Plant Diagnostic Lab and UNH Cooperative Extension!


 


Articles

Emran Ali, Extension Plant Pathologist, UNH
Plant pathogens are one of the main threats to agricultural production and affect the multibillion-dollar agricultural industry every year. Accurate a... Learn More
Emran Ali, Ph.D. joins COLSA and Extension to serve in several roles
Emran Ali, Ph.D. will serve as as Director of the UNH Plant Diagnostic Lab, State Extension Specialist, and Associate Professor of Plant Pathology in ... Learn More
  Fire blight outbreaks have been reported from several orchards around NH. The outbreaks likely occurred on unprotected blossoms during the... Learn More

Resources

How to package different types of samples (leaves, branches, whole plants), what to include in the package (plant sample, completed form, payment), an... Learn More
These pages provide current weather information with downloadable weather graphs.  


Belknap County (Moulton Farm)
Carr... Learn More
The apple maggot (Rhagoletis pomonella) is one of the most important economic insect pests of apples in New Hampshire. This native insect is also know... Learn More
To submit a plant sample for diagnosis, please send a completed Plant Problem Identification Form along with payment and the plant sample to the Plant... Learn More
Step by step instructions for submitting a sample to the Plant Diagnostic Lab.
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Introduction

The native flowering dogwood, Cornus florida is a popular ornamental tree that thrives well in the warmer areas of New Ham... Learn More