Invasive Plants & Insects in Forests

Stem and Root Rot
Root and Stem Rots (Webinar)
A part of the New Hampshire Forest Health Webinar Series
A part of the New Hampshire Forest Health Webinar Series Learn More
Fall webworm
Defoliators and Other Hardwood Pests (Webinar)
A part of the New Hampshire Forest Health Webinar Series
A part of the New Hampshire Forest Health Webinar Series Learn More
Hemlock Woolly Adelgid
Softwood Pests of New Hampshire (Webinar)
A part of the New Hampshire Forest Health Webinar Series
A part of the New Hampshire Forest Health Webinar Series Learn More
Ash tee with bark falling off
The Emerald Ash Borer (Webinar)
A part of the New Hampshire Forest Health Webinar Series
A part of the New Hampshire Forest Health Webinar Series Learn More
Adult Asian Longhorned Beetle
Check Your Pool Filters for Asian Longhorned Beetle
Look for this invasive insect in your pool this summer.
Look for this invasive insect in your pool this summer. Learn More
Serpentine galleries left by emerald ash borer
Tips for Becoming an Emerald Ash Borer Detective
You don’t have to be an expert to track down these bad bugs.
You don’t have to be an expert to track down these bad bugs. Learn More
Mystery tree with compound leaves
Citizen Scientist: Sleuthing Out the Mystery of a New Invasive
by Anne Krantz, NRS '95 & NH Big Tree Volunteer
by Anne Krantz, NRS '95 & NH Big Tree Volunteer Learn More
Emerald Ash Borer (EAB) Update
Emerald ash borer (EAB) is extremely destructive invasive insect that attacks ash trees. It was first found in New Hampshire in 2013, and the lis... Learn More
oak wilt leaves brown and green
On the Lookout for Oak Wilt
Not in New Hampshire, yet.
Not in New Hampshire, yet. Learn More
Application Period Opens for 2019 NH Invasives Academy
UNH Cooperative Extension will host a two-day workshop focused on invasive plants on September 26-27, 2019 in Enfield, NH.
UNH Cooperative Extension will host a two-day workshop focused on invasive plants on September 26-27, 2019 in Enfield, NH. Learn More