Source: California Invasive Plant Council

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Plant Information Sites

General plant information | Weed control information

Many weed control projects in California are conducted by local Weed Management Areas, organized by county. WMAs were formerly overseen by the California Department of Food and Agriculture but the state program was disbanded. For local regulations on noxious weeds, contact your county Agricultural Department.

General Invasive Plant Information

Detailed information on plants regulated as noxious weeds by the California Department of Food and Agriculture

Visit the Management Library to view Elemental Stewardship Abstracts describing the biology and control information for many invasive plants. This site is also home to the Weed Control Methods Handbook, which outlines various control technologies in detail. And if you need to know what an invasive plant looks like, there are more than 900 photographs in the Photography Archive. (TNC closed this program. The website is now maintained as an archive but is not updated.)

The hub for management information in the western U.S. Includes plant biology and management information; education information; and publications. (CISM closed in 2015. The website is now maintained as an archive but is not updated.)

NatureServe is a non-profit conservation organization that provides the scientific information and tools needed to help guide effective conservation action. NatureServe and its network of natural heritage programs are the leading source for information about rare and endangered species and threatened ecosystems. Their invasive assessments are available by searching for a species on Nature Serve Explorer. The assessment protocol is available here.

Weed Control Information

For weed control and management information, please see the Invasive Plants Management page. The >UC Davis Weed Research and Information Center also provides control information.

Blogs about Invasive Plants

This blog is the work of the University of Georgia Center for Invasive Species and Ecosystem Health. The blog is updated weekly and covers all the latest research and policy surrounding invasive species.

This blog is written by CABI, a non-profit organization working towards food security.

This blog, written by the UC Davis Weed Science program, mainly focuses on agricultural pests.


Related Links

Organizational and Governmental Websites