“Share your knowledge. It is a way to achieve immortality.” Dalai Lama
This official New Hampshire Invasive Species website has links to information on Invasive Plants, Insects, Fungi and Diseases, and Wildlife in NH. The site
includes information on the New Hampshire Invasive Species Program, Invasive Species Booklets and Posters, Invasive Species Mapping using both EDDMapS and I-MapInvasives, and much more. - AN EXCELLENT RESOURCE!
Each New England state has a different list of invasive plants, both prohibited species and potentially invasive watchlist species.
CT Invasive Plant List -
2018
MA Prohibited Plant List - 2023
ME Advisory List of Invasive Plants - 2019
NH Comprehensive Invasive Plant List -
2023
NY Invasive Species List -
2023
VT Invasive Plant Quarantine & Watch
List - 2017
NOTE: This Vermont list is outdated! For example, Multiflora Rose and Autumn Olive are only on the VT Watchlist but are 'Prohibited' in all other New England
states.
The Buckthorn Blaster uses the cut-stump method of invasive plant control, a simple and effective treatment option to stop invasive plant growth.
The advantages of cut-stump treatment include:
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Low risk of non-target chemical damage
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Up to 100% effective against invasive plant survival and regrowth
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Less expense and more efficient compared to other control options
Originally from Asia, Hemlock Woolly Adelgid (HWA) was first discovered in New Hampshire in Portsmouth in 2000. This small, wingless insect uses its piercing mouth-parts to feed in the xylem of
the small hemlock twigs. HWA, left untreated, can kill a tree in 4 to 10 years. We found HWA in our forests at Distant Hill during a logging cut during the winter of 2025.
Below are a few resources about Hemlock Wooly Adelgid and the Best Management Practices to control its spread:
NH BUGS
Hemlock Wooly Adelgid Best Management Practices
NHBugs is a collaboration of forest health agencies based in New Hampshire, working to keep the public informed about invasive forest pests.
Silvicultural Options for Managing Hemlock
Forests Threatened by HWA
A factsheet by David Orwig of Harvard Forest & David Kittredge of UMass Extension.
Integrated Approach to Hemlock Woolly Adelgid Mitigation
A publication from Penn State Extension discussing hemlock woolly adelgid management techniques to help conserve the eastern hemlock.
Managing Hemlock in Northern New England Forests Threatened by Hemlock Woolly Adelgid and Elongate Hemlock
Scale
An brochure from the United States Department of Agriculture (USDA).
EXCELLENT RESOURCE!
