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.
Ontario's Invading Species Awareness Program (Canada).
New York Invasive Species Clearinghouse.
Centre for Invasive Species Solutions; Atlas of Living Australia; Australian Government. Department of Agriculture, Water and the Environment.
USDA. ARS. National Genetic Resources Program. GRIN-Global.
State and Local Government
Indiana Department of Natural Resources. Invasive Plant Species Assessment Working Group.
Pennsylvania Department of Conservation and Natural Resources.
See also: Invasive Plant Fact Sheets for plant species (trees, shrubs, vines, herbs and aquatic plants) that have impacted the state's natural lands
Wisconsin Department of Natural Resources.
King County Department of Natural Resources (Washington). Water and Land Resources Division.
Colorado Department of Agriculture. Conservation Services Division. Noxious Weed Program.
Montana State University Extension.
Oregon State University. Extension Service.
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.