USDA. Natural Resources Conservation Service.

Compiles and provides information about Federal and State Noxious Weed Lists, and weeds and introduced plants found in the United States by scientific and common name.

USDA. Animal and Plant Health Inspection Service.

Information about activities to prevent the introduction of non-native invasive plants and the spread of newly introduced invasive plants within the United States.

Cornell University. Weed Ecology and Management Laboratory.

Information about major weeds, and weed management techniques for organic production.

Topics include mechanical techniques such as pulling and hoeing, as well as cultural techniques like competition and cover cropping.

Montana State University Extension.

Information about managing burned areas by enhancing desired species while controlling noxious weeds. Revised in 2019.