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Invasive Species Resources

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Wisconsin Department of Agriculture, Trade, and Consumer Protection.
North Dakota Department of Agriculture.
North Dakota Game and Fish Department.
University of Wisconsin. Sea Grant Institute.

Polk County Department of Land and Water Resources (Wisconsin).

Wisconsin Department of Natural Resources.
University of Wisconsin. Extension Lakes Program. Citizen Lake Monitoring Network.
University of Wisconsin. Extension Lakes Program. Citizen Lake Monitoring Network.
North Dakota Game and Fish Department.

Wisconsin Department of Natural Resources.

University of Vermont. Entomological Research Laboratory.
South Dakota State University. Agricultural Experiment Station; Cooperative Extension Service.
University of Maryland. Cooperative Extension. Home and Garden Information Center.
Have a plant or pest question? Questions from Maryland and the District of Columbia are answered by Home and Garden Information Center’s Certified Professional Horticulturists. If you are located outside of these areas, you will be asked to enter your state and county. Your question will be forwarded to the appropriate extension expert.
eXtension.

eXtension is an educational partnership of more than 70 universities to help you improve your life every day with access to objective, research-based information and educational opportunities. Categories include integrated pest management and fire ants. Requires free registration.
See also: Use the One Search service to search the resources provided by your Cooperative Extension Service using a Google Custom Search Engine that includes many of the Cooperative Extension web sites provided by your Land-Grant institutions.

Lake Champlain Land Trust.
USDA. Forest Service.
There are 21 major species of noxious weeds (invasive) on the Black Hills National Forest in western South Dakota and northeastern Wyoming. 
Commonwealth of Northern Mariana Islands. Division of Fish and Wildlife.
University of Vermont. Forest Pathology.

Wisconsin Department of Natural Resources.