Texas A&M University. AgriLife Extension Service. Department of Wildlife and Fisheries Sciences.

University of Georgia. Center for Invasive Species and Ecosystem Health.

Provides state, county, point and GIS data. Maps can be downloaded and shared.

USDA. ARS. Tellus.

In parts of the South, there are stories about an invasive floating weed, which forms such a dense mass that it enables small animals to walk across water. This weed, called giant salvinia, is an exotic fern from South America that invades ponds, lakes, and other waterways in the United States. It damages aquatic ecosystems by outgrowing and replacing native plants that provide food and habitat for native animals and waterfowl.

Agricultural Research Service (ARS) scientists are testing a naturally occurring fungus (Myrothecium spp.) against giant salvinia to help control it. Initial tests have found that the fungus stops this problematic weed from growing and even can kill it.

University of Georgia. Center for Invasive Species and Ecosystem Health.

North American Invasive Species Management Association.

The NAISMA Classical Biocontrol Committee is excited to announce new peer-reviewed weed biocontrol publications for use by managers and landowners. Subject matter experts are developing a series of factsheets that cover invasive plants and their associated biological control agents in North America. Funding for these factsheets is provided by the United State Forest Service. NAISMA is partnering with iBiocontrol.org to host these publications.
See also: Resources on Biocontrol and Classical Weed Biocontrol Factsheets Released for Landowners and Weed Managers (Press Release - Aug 31, 2022)

DOI. USGS. Wetland and Aquatic Research Center.

Provides detailed collection information as well as animated map.

USDA. APHIS. Plant Protection and Quarantine.

Includes species listed as a Federal Noxious Weed under the Plant Protection Act, which makes it illegal in the U.S. to import or transport between states without a permit.

USDA. APHIS. Cooperative Agricultural Pest Survey. National Agricultural Pest Information System.

USDA. NRCS. National Plant Data Center.

University of California. Weed Research and Information Center.

See also: Weeds in Natural Areas for more information sheets

Google. YouTube; Great Big Story.