Washington Department of Fish and Wildlife.
Connecticut Agricultural Experiment Station. Plant Disease Information Office.
Carolinas Beach Vitex Task Force.
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.
South Carolina Department of Natural Resources. Southeast Regional Taxonomic Center.
Clemson University. Regulatory Services.
New York Invasive Species Clearinghouse.
Cornell University. Forest Health and Invasive Non-native Forest Pests.
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.
Washington State Noxious Weed Control Board.