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U.S. Department of Agriculture
National Invasive Species Information Center
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Invasive Species Resources

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Environment and Natural Resources State Bill Tracking Database
National Conference of State Legislatures.
National Conference of State Legislatures (NCSL) tracks environment and natural resources legislation to bring you up-to-date, real-time information on bills (from 2015) that have been introduced in the 50 states and the District of Columbia, and U.S. territories. Database provides search options by state (or territory), topic, keyword, year, status or primary sponsor. Topics include: Wildlife-Invasive Species and Wildlife-Pollinators.
Environmental Fact Sheet: Asian Clams in New Hampshire (2012) (PDF | 150 KB)
New Hampshire Department of Environmental Services.
See also: Exotic Species Program - Publications for more resources
Environmental Fact Sheet: Eurasian Milfoil (2010) (PDF | 374 KB)
New Hampshire Department of Environmental Services.
See also: Exotic Species Program - Publications for more resources
Environmental Fact Sheet: Purple Loosestrife: An Exotic Menace (2010) (PDF | 1.61 MB)
New Hampshire Department of Environmental Services.
See also: Exotic Species Program - Publications for more resources
Environmental Fact Sheet: Water Chestnut Discovered in New Hampshire Waters (2010) (PDF | 746 KB)
New Hampshire Department of Environmental Services.
See also: Exotic Species Program - Publications for more resources
Environmental Fact Sheet: Zebra Mussels (2010) (PDF | 87 KB)
New Hampshire Department of Environmental Services.
See also: Exotic Species Program - Publications for more resources
European Cherry Fruit Fly

New York State Department of Agriculture and Markets.
European Woodwasp/Sirex Woodwasp in Colorado: Identification of Insects and Damage of Similar Appearance (PDF | 264 KB)
Colorado State University Extension.
See also: Exotic Insect Publications for more species
Exotic Aquatic Plants - The Frightful Fourteen (PDF | 584 KB)
New Hampshire Department of Environmental Services.
Fact Sheet: Common Buckthorn (Rhamnus cathartica) (2014) (PDF | 224 KB)
New Hampshire Department of Agriculture, Markets, and Food. Division of Plant Industry.
See also: New Hampshire's Prohibited Invasive Plant Fact Sheets for additional invasive trees, shrubs, vines, and herbaceous plants
Fact Sheet: Garlic Mustard (Alliaria petiolata) (2014) (PDF | 257 KB)
New Hampshire Department of Agriculture, Markets, and Food. Division of Plant Industry.
See also: New Hampshire's Prohibited Invasive Plant Fact Sheets for additional invasive trees, shrubs, vines, and herbaceous plants
Fact Sheet: Giant Hogweed (Heracleum mantegazzianum) (2014) (PDF | 334 KB)
New Hampshire Department of Agriculture, Markets, and Food. Division of Plant Industry.
See also: New Hampshire's Prohibited Invasive Plant Fact Sheets for additional invasive trees, shrubs, vines, and herbaceous plants
Fact Sheet: Japanese Barberry (Berberis thunbergii) (2014) (PDF | 249 KB)
New Hampshire Department of Agriculture, Markets, and Food. Division of Plant Industry.
See also: New Hampshire's Prohibited Invasive Plant Fact Sheets for additional invasive trees, shrubs, vines, and herbaceous plants
Fact Sheet: Japanese Honeysuckle (Lonicera japonica) (2014) (PDF | 279 KB)
New Hampshire Department of Agriculture, Markets, and Food. Division of Plant Industry.
See also: New Hampshire's Prohibited Invasive Plant Fact Sheets for additional invasive trees, shrubs, vines, and herbaceous plants
Fact Sheet: Japanese Knotweed (Polygonum cuspidatum) (2014) (PDF | 237 KB)
New Hampshire Department of Agriculture, Markets, and Food. Division of Plant Industry.
See also: New Hampshire's Prohibited Invasive Plant Fact Sheets for additional invasive trees, shrubs, vines, and herbaceous plants
Fact Sheet: Japanese Stilt-Grass (Microstegium vimineum) (2014) (PDF | 283 KB)
New Hampshire Department of Agriculture, Markets, and Food. Division of Plant Industry.
See also: New Hampshire's Prohibited Invasive Plant Fact Sheets for additional invasive trees, shrubs, vines, and herbaceous plants
Fact Sheet: Mile-a-Minute Vine (Polygonum perfoliatum) (2014) (PDF | 206 KB)
New Hampshire Department of Agriculture, Markets, and Food. Division of Plant Industry.
See also: New Hampshire's Prohibited Invasive Plant Fact Sheets for additional invasive trees, shrubs, vines, and herbaceous plants
Fact Sheet: Multiflora Rose (Rosa multiflora) (2014) (PDF | 222 KB)
New Hampshire Department of Agriculture, Markets, and Food. Division of Plant Industry.
See also: New Hampshire's Prohibited Invasive Plant Fact Sheets for additional invasive trees, shrubs, vines, and herbaceous plants
Fact Sheet: Oriental Bittersweet (Celastrus orbiculatus) (2014) (PDF | 227 KB)
New Hampshire Department of Agriculture, Markets, and Food. Division of Plant Industry.
See also: New Hampshire's Prohibited Invasive Plant Fact Sheets for additional invasive trees, shrubs, vines, and herbaceous plants
Fact Sheet: Tree of Heaven (Ailanthus altissima) (2014) (PDF | 238 KB)
New Hampshire Department of Agriculture, Markets, and Food. Division of Plant Industry.
See also: New Hampshire's Prohibited Invasive Plant Fact Sheets for additional invasive trees, shrubs, vines, and herbaceous plants