USDA. Animal and Plant Health Inspection Service.
The U.S. Department of Agriculture's Animal and Plant Health Inspection Service (APHIS) has issued the final environmental assessment (EA) for releasing Japanese knotweed psyllid (Aphalara itadori) to manage Japanese, giant, and bohemian knotweeds (Fallopia japonica, F. sachalinensis, and their hybrid, F. x bohemica). After careful analysis, APHIS has determined that releasing Japanese knotweed psyllid within the continental United States is not likely to have a significant impact on the environment. Based on this determination, APHIS will not prepare an environmental impact statement and will begin issuing permits for the release of Japanese knotweed psyllid.
Distribution / Maps / Survey Status
The section below contains highly relevant resources for this species, organized by source. Or, to display all related content view all resources for Japanese Knotweed.
Council or Task Force
Washington State Recreation and Conservation Office. Washington Invasive Species Council.
New York Invasive Species Clearinghouse.
USDA. ARS. National Genetic Resources Program. GRIN-Global.
Cornwall County Council (United Kingdom).
State and Local Government
Indiana Department of Natural Resources. Invasive Plant Species Assessment Working Group.
Wisconsin Department of Natural Resources.
Colorado Department of Agriculture. Conservation Services Division. Noxious Weed Program.
Montana State University Extension.
Pennsylvania State University. Cooperative Extension.
- Integrated Taxonomic Information System. Fallopia japonica. [Accessed Mar 19, 2015].
- Stone, K.R. 2010. Polygonum sachalinense, P. cuspidatum, P. × bohemicum. In: Fire Effects Information System. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory.