Connecticut Agricultural Experiment Station. Plant Disease Information Office.
Carolinas Beach Vitex Task Force.
University of Connecticut. Department of Plant Science and Landscape Architecture.
University of Connecticut. Connecticut Invasive Plant Working Group.
South Carolina Department of Natural Resources. Southeast Regional Taxonomic Center.
Clemson University. Regulatory Services.
University of New Hampshire. Cooperative Extension; New Hampshire Department of Agriculture, Markets & Food.
Utah Department of Agriculture and Food.
University of New Hampshire. Cooperative Extension.