Connecticut Agricultural Experiment Station. Plant Disease Information Office.
University of Connecticut. Department of Plant Science and Landscape Architecture.
Michigan Department of Agriculture and Rural Development.
Michigan Department of Natural Resources.
Louisiana State University Agricultural Center. Research and Extension.
University of Connecticut. Connecticut Invasive Plant Working Group.
New York City Department of Health.
University of Alaska - Fairbanks. Cooperative Extension Service.
Michigan Emerging Disease Issues.
Michigan's Invasive Species Program.
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.