An official website of the United States government.

The .gov means it’s official.
Federal government websites always use a .gov or .mil domain. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar.

This site is also protected by an SSL (Secure Sockets Layer) certificate that’s been signed by the U.S. government. The https:// means all transmitted data is encrypted — in other words, any information or browsing history that you provide is transmitted securely.

National Invasive Species Information Center
U.S. Department of Agriculture
Home / Invasive Species Resources

Invasive Species Resources

Provides access to all site resources, with the option to search by species common and scientific names. Resources can be filtered by Subject, Resource Type, Location, or Source.

Displaying 1 to 20 of 21

Search Help
Non-Indigenous Aquatic Species of Concern for Alaska - Green Crab (May 4, 2004) (PDF | 161 KB)

Prince William Sound Regional Citizens' Advisory Council.

See also: Marine Invasive Species for more fact sheets
Noxious Weed Information - Canada Thistle
Colorado Weed Management Association.
Noxious Weed Information - Dalmatian Toadflax
Colorado Weed Management Association.
Noxious Weed Information - Diffuse Knapweed
Colorado Weed Management Association.
Noxious Weed Information - Eurasian Watermilfoil
Colorado Weed Management Association.
Noxious Weed Information - Giant Salvinia
Colorado Weed Management Association.
Noxious Weed Information - Hoary Cress (Whitetop)
Colorado Weed Management Association.
Noxious Weed Information - Houndstongue
Colorado Weed Management Association.
Noxious Weed Information - Hydrilla
Colorado Weed Management Association.
Noxious Weed Information - Leafy Spurge
Colorado Weed Management Association.
Noxious Weed Information - Medusahead
Colorado Weed Management Association.
Noxious Weed Information - Purple Loosestrife
Colorado Weed Management Association.
Noxious Weed Information - Russian Knapweed
Colorado Weed Management Association.
Noxious Weed Information - Russian Olive
Colorado Weed Management Association.
Noxious Weed Information - Salt Cedar
Colorado Weed Management Association.
Noxious Weed Information - Scotch Thistle
Colorado Weed Management Association.
Noxious Weed Information - Spotted Knapweed
Colorado Weed Management Association.
Noxious Weed Information - Teasel
Colorado Weed Management Association.
Noxious Weed Information - Yellow Starthistle
Colorado Weed Management Association.
Noxious Weed Information - Yellow Toadflax
Colorado Weed Management Association.