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New Hampshire Fish and Game Department.
New Hampshire Department of Environmental Services.
See also: Exotic Species Program - Publications for more resources
Maine Department of Agriculture, Conservation and Forestry.
University of Illinois Extension.
Technical Forestry Bulletin NRES-160.
Chicago Botanic Garden.
Maine Department of Agriculture, Conservation, and Forestry. Maine Natural Areas Program.
See also: Official 2019 Endorsement of the Advisory List of Invasive Plants (PDF | 711 KB) by the Maine Department of Agriculture, Conservation and Forestry.