Resources

In the summer and fall of 2023, blueberry leaf rust was found widely distributed in New Hampshire, including Merrimack, Hillsborough and Strafford…

Exobasidium leaf and fruit spot of blueberry is a fungal disease affecting both leaves and berries. Symptoms matching this disease were reported in…

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…

Several celery samples from high tunnel production with leaf curl have been identified by the UNH Plant Diagnostic Lab; this disease causes…

How to package different types of samples (leaves, branches, whole plants), what to include in the package (plant sample, completed form, payment),…

These pages provide current weather information with downloadable weather graphs.   Belknap County (Moulton Farm) Carroll County Farm and…

The apple maggot (Rhagoletis pomonella) is one of the most important economic insect pests of apples in New Hampshire. This native insect is also…

To submit a plant sample for diagnosis, please send a completed Plant Problem Identification Form along with payment and the plant sample to the…

Step by step instructions for submitting a sample to the Plant Diagnostic Lab.

Introduction The native flowering dogwood, Cornus florida is a popular ornamental tree that thrives well in the warmer areas of New Hampshire. The…