Resources

Resource Category Topic Type
Frogeye leaf spot and black rot on Apple
Frogeye leaf spot and black rot caused by the fungus Botryosphaeria obtuse (Schwein) is an economically important disease of apple in the Northern…
 Agriculture & Gardens, Fruit & Vegetable Crops, Plant Disease & Diagnosis Services tree fruit crops & orchards Fact Sheet
Gibbera twig blight
Gibbera twig blight is known to affect blueberries in Merrimack, Sullivan, Cheshire and Grafton counties of New Hampshire. This disease will affect…
Location: Soil Testing, Insect ID & Plant Diagnostic Lab
 Agriculture & Gardens, Greenhouse, Nursery & Garden Centers, Fruit & Vegetable Crops, Plant Disease & Diagnosis Services, Yard & Garden Berry Crops, Agriculture & Gardens Fact Sheet
Black Death of Hellebore
Black death of hellebore, a virus disease affecting hellebores in nursery and home gardens, was found in a nursery in Grafton County, New Hampshire,…
Location: Grafton County Office, Soil Testing, Insect ID & Plant Diagnostic Lab
 Agriculture & Gardens, Greenhouse, Nursery & Garden Centers, Plant Disease & Diagnosis Services, Yard & Garden Fact Sheet
Blueberry Leaf Rust
In the summer and fall of 2023, blueberry leaf rust was found widely distributed in New Hampshire, including Merrimack, Hillsborough and Strafford…
 Agriculture & Gardens, Fruit & Vegetable Crops, Plant Disease & Diagnosis Services tree fruit crops & orchards, Agriculture & Gardens Fact Sheet
Exobasidium leaf and fruit spot of blueberry
Exobasidium leaf and fruit spot of blueberry is a fungal disease affecting both leaves and berries. Symptoms matching this disease were reported in…
 Agriculture & Gardens, Fruit & Vegetable Crops, Plant Disease & Diagnosis Services tree fruit crops & orchards, Agriculture & Gardens Fact Sheet
Cherry Leaf Spot
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…
 Agriculture & Gardens, Fruit & Vegetable Crops, Plant Disease & Diagnosis Services tree fruit crops & orchards, Agriculture & Gardens Fact Sheet
Celery Leaf Curl - Anthracnose
Several celery samples from high tunnel production with leaf curl have been identified by the UNH Plant Diagnostic Lab; this disease causes…
 Agriculture & Gardens, Fruit & Vegetable Crops, Plant Disease & Diagnosis Services, Yard & Garden vegetable crops, Agriculture & Gardens Fact Sheet
How to Submit Plant Samples to the UNH Plant Diagnostic Lab
How to package different types of samples (leaves, branches, whole plants), what to include in the package (plant sample, completed form, payment),…
 Plant Disease & Diagnosis Services Video
UNH NEWA-Compatible Weather Stations in New Hampshire
These pages provide current weather information with downloadable weather graphs.   Belknap County (Moulton Farm) Carroll County Farm and…
 Agriculture & Gardens, Fruit & Vegetable Crops, Greenhouse, Nursery & Garden Centers, Integrated Pest Management (IPM), Landscape Installation & Maintenance, Plant Disease & Diagnosis Services Agriculture & Gardens
Apple Maggot [fact sheet]
The apple maggot (Rhagoletis pomonella) is one of the most important economic insect pests of apples in New Hampshire. This native insect is also…
 Agriculture & Gardens, Fruit & Vegetable Crops, Plant Disease & Diagnosis Services Agriculture & Gardens
Guidelines for Collecting and Submitting Plant Material to the Plant Diagnostic Lab
Step by step instructions for submitting a sample to the Plant Diagnostic Lab.
Location: Soil Testing, Insect ID & Plant Diagnostic Lab
 Agriculture & Gardens, Plant Disease & Diagnosis Services Agriculture & Gardens
Discula "Dogwood" Anthracnose [fact sheet]
Introduction The native flowering dogwood, Cornus florida is a popular ornamental tree that thrives well in the warmer areas of New Hampshire. The…
 Fruit & Vegetable Crops, Agriculture & Gardens, Pesticide Safety Education, Plant Disease & Diagnosis Services Agriculture & Gardens