Invasive Plants & Insects

Pull by Hand April-June before it goes to seed
Garlic mustard is a pernicious non-native plant which: 1. Releases sinigrin, preventing the growth of other plants by disrupting a beneficial fung... Learn More
As the weather warms and our days stretch longer and brighter, we begin to see and hear the bustle of the natural world picking up all around us. The ... Learn More
Keep an eye out for invasive species, from February 26— March 3, 2024 and beyond.
National Invasive Species Awareness Week (NISAW) is being celebrated February 26— March 3, 2024. Learn More
Japanese Knotweed is filling the roadsides leading up to your house. Garlic mustard has begun along the paths you walk in the forest. Multiflora rose ... Learn More
Keep an eye out for invasive insects this summer.
Check your pool filters for invasive insects this summer. Learn More
Keep an eye out for EAB, from May 22—28 and beyond.
Keep an eye out for EAB, from May 22—28 and beyond. Learn More
UNH students gain field experience and help protect the N.H. Seacoast through Extension’s summer internship program
UNH students gain field experience and help protect the N.H. Seacoast through Extension’s summer internship program. Learn More
A canopy invader best controlled with early detection
A canopy invader best controlled with early detection Learn More
While not very common in New Hampshire, it is highly invasive and has the potential to become a significant pest
While not very common in New Hampshire, it is highly invasive and has the potential to become a significant pest Learn More
While not a serious problem in New Hampshire, Japanese honeysuckle is a major pest in other parts of the northeast.
While not a serious problem in New Hampshire, Japanese honeysuckle is a major pest in other parts of the northeast. Learn More