Plant Disease & Diagnosis Services

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, 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
Plant pathogens are one of the main threats to agricultural production and affect the multibillion-dollar agricultural industry every year. Accurate a... Learn More
  Fire blight outbreaks have been reported from several orchards around NH. The outbreaks likely occurred on unprotected blossoms during the... Learn More
One likely answer is the ‘B’ gene. This gene, also called “precocious yellow”, causes the stem of the squash to be yellow rather than green. Oved Shif... Learn More
Yes, you read it correctly. If you have tomato leaf mold, Chris Smart and her team at Cornell are studying this pathogen; and she needs ... Learn More
Spring 2019 revealed severe winter damage on broadleaved evergreens and conifers
Spring 2019 revealed severe winter damage on broadleaved evergreens and conifers Learn More
Within the last week (August 15, 2018), cucurbit downy mildew (CDM) has been positively identified in Massachusetts in Franklin County, bordering VT a... Learn More
At the UNH Plant Diagnostic Lab, Dr. Cheryl Smith, Extension Plant Health Specialist, and director of the Lab, examines and tests plant samples to det... Learn More