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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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Adirondack Park Invasive Plant Program
Adirondack Park Invasive Plant Program.
New York State Hemlock Initiative (NYSHI)
Cornell University. Forest Health and Invasive Non-native Forest Pests.
Reduce Invasive Hitch-Hikers
Pennsylvania Department of Conservation and Natural Resources.
Do you hike? Boat? Or camp? Check out these fact sheets for tips to reduce the chance of spreading invasives when you recreate on DCNR lands and in your own backyard.
Resources - Invasive Plants
University of New Hampshire. Cooperative Extension.
Wild Plants - Invasive Plants

Pennsylvania Department of Conservation and Natural Resources.