Washington Department of Fish and Wildlife.
Connecticut Agricultural Experiment Station. Plant Disease Information Office.
University of Connecticut. Department of Plant Science and Landscape Architecture.
New York State Department of Agriculture and Markets.
University of Connecticut. Connecticut Invasive Plant Working Group.
New York City Department of Health.
New York Invasive Species Clearinghouse.
Cornell University. Forest Health and Invasive Non-native Forest Pests.
University of New Hampshire. Cooperative Extension; New Hampshire Department of Agriculture, Markets & Food.
New York State Department of Environmental Conservation.
New York Department of Environmental Conservation.
Cornell University. New York State Integrated Pest Management Program.
Washington State Department of Agriculture.
Utah Department of Agriculture and Food.
University of New Hampshire. Cooperative Extension.
Washington State Noxious Weed Control Board.