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NRCS Invasive Species Policy
Invasive Species Executive Order 13112
View Federal and state noxious weed lists, an invasive plant list, or an introduced plant
list, each with links to more information.
Federal Noxious Weed List
In accordance with the Federal
Noxious Weed Act of 1974, as amended (7 U.S.C. 2801 et seq.), the U.S.
government has designated certain plants as noxious weeds:
List of Federal Noxious Weeds
State Noxious Weed Lists
The following states have designated certain plants as legally noxious:
Federal and State Noxious Weeds
This composite list is a summary of noxious status for all of the listed plants in the U.S.
Weeds of the U.S.
These plants are weedy or invasive, or have the potential to become weedy or invasive, in
all or part of their U.S. range. We assembled this list verbatim from sources around
the country to provide a comprehensive look at potential problem plants in the U.S.
Most are introduced to the United States, but some are harmful pests in parts of this
country, and valuable natives in others. To learn more, please read
About Weeds of the U.S.
You may view individual weed lists assembled by state and federal resource managers,
state Exotic Plant Pest Councils, or university noxious weed specialists, or a composite
list that is derived from these individual lists.
Weeds of the U.S., a composite of all twelve individual lists:
Individual weed lists:
| US |
Plant Protection and Quarantine. Federal noxious weed list (24 May 2006). USDA Animal and Plant Health Inspection Service, Washington, DC |
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USDA APHIS Plant Protection and Quarantine. Federal domestic quarantines (24 May 2006). USDA APHIS Plant Protection and Quarantine, Washington, DC |
| STATE |
Assorted authors. 200_. State noxious weed lists for 46 states. State agriculture or natural resource departments |
| Cal-IPC |
California Invasive Plant Council. California Invasive Plant Inventory. Cal-IPC Publication 2006-02 (1 February 2007). California Invasive Plant Council, Berkeley, California |
| FLEPPC |
Florida Exotic Pest Plant Council. Invasive plant list (19 October 1999). Florida Exotic Pest Plant Council, Florida |
| HEAR |
USDI, Geological Survey. Information index for selected alien plants in Hawaii (20 October 2003). Hawaiian Ecosystems at Risk Project, Biological Resources Division, Haleakala Field Station, Makawao, Hawaii |
| KY |
Haragan, P.D. Weeds of Kentucky and adjacent states: a field guide. The University Press of Kentucky, Lexington, Kentucky |
| N'EAST |
Uva, R.H., J.C. Neal, & J.M. DiTomaso. Weeds of the Northeast. Cornell University Press, Ithaca, New York |
| NE&GP |
Stubbendieck, J., G.Y. Friisoe, & M.R. Bolick. Weeds of Nebraska and the Great Plains. Nebraska Department of Agriculture, Bureau of Plant Industry, Lincoln, Nebraska |
| SEEPPC |
Southeast Exotic Pest Plant Council. Invasive exotic pest plants in Tennessee (19 October 1999). Research Committee of the Tennessee Exotic Pest Plant Council, Tennessee |
| SWSS |
Southern Weed Science Society. Weeds of the United States and Canada. CD-ROM. Southern Weed Science Society, Champaign, Illinois |
| WI |
Hoffman, R. & K. Kearns (eds.). Wisconsin manual of control recommendations for ecologically invasive plants. Wisconsin Dept. Natural Resources, Madison, Wisconsin |
| WSWS |
Whitson, T.D. (ed.) et al. Weeds of the West. Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming, Laramie, Wyoming |
Introduced Plants of the U.S.
These plants are introduced to the United States from other countries or continents.
While many are harmless or beneficial, others that are not already invasive or
noxious have a high potential to become so in all or part of their range. In
general, introduced plants are likely to invade or become noxious since they lack
co-evolved competitors and natural enemies to control their populations. A few plants
such as dandelion (Taraxacum officinale) have some populations in the U.S. that
are native and others that are introduced from other countries.
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