Source: California Invasive Plant Council

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Organizational and Governmental Sites

California | IPC and EPPC | Other States | Federal
Professional | Restoration | International

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

California Organizations and Agencies

Weed Management Areas (WMAs) are local organizations that bring together landowners and managers (private, city, county, State, and Federal) in a county, multi-county, or other geographical area to coordinate efforts and expertise against common invasive weed species. This site includes links to local WMA websites with information on invasive plants of concern in your county. For local regulations on noxious weeds, contact your county Agricultural Department.

Includes the CNPS Inventory of Rare and Endangered Plants, the CNPS Manual of California Vegetation, and other CNPS programs. It's also a great place to learn about our native flora and to find out how to get involved in its preservation.

Online database of almost 8000 species. Species reports provide taxonomical, ecological,and distribution information. Includes photographs of native and non-native plants, a library of individual plant sightings, and a plant name library that allows you to search for synonyms for scientific names.

A coordinated regional effort dedicated to preserving California's coastal resources through the elimination of invasive species of Spartina (cordgrass).

A partnership dedicated to the reduction and eventual elimination of Arundo donax (Giant reed) where it threatens rivers, creeks and wetlands in central and northern California

A searchable database on noxious weed control projects in California, compiled by a committee of state and federal agencies. Submit your project's information.

Dedicated to promoting, preserving, and restoring the diversity of California’s native grasses and grassland ecosystems through education, advocacy, research, and stewardship

A loose association of scientists, naturalists and educators working to promote understanding of chaparral and improve communication between the scientific and firefighting communities. One of the major threats to this ecosystem is conversion to weedy grasslands.

This Guide is produced and distributed by the San Diego Chapter of the American Society of the Landscape Architects and the San Diego Chapter of the California Native Plant Society for the primary purpose of educating landscape professionals and the general-public regarding the cultivation, selection, use and management of non-native and/or invasive flora in San Diego regional landscapes.

Other IPC and EPPC Sites

An association encompassing Exotic Pest Plant and Invasive Plant Councils nationwide.

Includes links to the state chapters of Alabama, Florida, Georgia, Tennessee, North Carolina, Mississippi, Kentucky, and South Carolina

The original EPPC, FlEPPC was founded in Florida in 1984 for the purpose of focusing attention on the impacts exotic pest plants have on biodiversity.

Other States' Organizations

A program of Montana State University, CIPM provides a wealth of information on all aspects of invasive plants. Website highlights include a how-to guide for starting a weed management area, funding announcements, an online textbook on invasive plant management, and extensive outreach materials.

CWMA is the single best source of noxious weed information in Colorado. Whether you are looking for weed control assistance, or just enjoy Colorado's natural beauty and would like to help keep it native and natural-the Colorado Weed Management Association can help.

Information and pictures of some 35 invasive species, aquatic and terrestrial (in addition to a couple of hundred native species).

West Florida Research and Education Center. The Jay Research and Education Center (JAY REC), part of the University of Florida's Institute of Food and Agricultural Sciences (IFAS)

For early detection and tracking of invasive alien plants and weedy natives. The INVADERS Database is a comprehensive database of exotic plant names and weed distribution records for five states in the northwestern United States. The spatial and temporal spread of weeds can be displayed using the historic distribution records in INVADERS. The INVADERS web site contains actual examples of how land management and weed regulatory agencies are using these data to improve their weed management programs. Noxious weed listings are provided for the 48 contiguous US states and six southern tier Canadian provinces.

The goal of the HEAR project is to provide resources (technology, methods, and information) to resource managers statewide to aid the fight against invasive alien species.

The Washington State Noxious Weed Control Board advises the Washington State Department of Agriculture about noxious weed control in Washington State. It also serves as the state's noxious weed coordination center.

Federal Agencies

A gateway to invasive species information covering Federal, State, local, and international sources.

The PLANTS Database provides standardized information about the vascular plants, mosses, liverworts, hornworts, and lichens of the U.S. and its territories.

A web-based, public education project of the Plant Conservation Alliance's Alien Plant Working Group, providing fact sheets and other information on the threats and impacts of invasive alien plants to the native flora, fauna, and natural ecosystems of the United States.

USDA-APHIS. Activities and Organization, APHIS Forms, Publications, Fact Book, What's New!, Subject Index, Guided Tour, Travelers' Tips, APHIS Gopher, Phone Directory, Import-Export Directory

A Pesticide Information Project of Cooperative Extension Offices of Cornell University, Michigan State University, Oregon State University, and University of California at Davis. Major support and funding was provided by the USDA/Extension Service/National Agricultural Pesticide Impact Assessment Program.

Control of invasive species is one of the most significant land management issues facing national parks. This page contains information about Exotic Plant Management Teams working in parks around the country as well as a link to the Aliens in Your Neighborhood curriculum for middle-school students.

The PCA is a consortium of ten federal government Member agencies and over 225 non-federal Cooperators representing various disciplines within the conservation field: biologists, botanists, habitat preservationists, horticulturists, resources management consultants, soil scientists, special interest clubs, non-profit organizations, concerned citizens, nature lovers, and gardeners.

Activities to prevent and control invasive plant and animal species that severely impact the lands and waters of the United States, including resources managed within the National Wildlife Refuge System, have become a priority for the U.S. Fish and Wildlife Service as we expand our efforts to conserve and protect our nation's native fish and wildlife habitats.

Organizes information from the southwestern US into one web location. Includes weed species profiles.

Professional Organizations

WSSA Information Information about Weeds, Herbicides, and Other Weed Sciences Related Pages Mail to System Operator, Dave Pike. Page Maintained by Nathan L. Sandland.

Dedicated to promoting the research, education, and regulatory aspects of weed science. This site includes newsletter and proceedings from past symposia.

A network of public and private professional weed managers who are involved in implementing any phase of county, municipal, district, state, provincial, or federal noxious weed law. Organizes National Invasive Weeds Awareness Weed in Washington, D.C. each year.

Restoration Organizations

A non-profit, membership based organization dedicated to the purpose of bringing about the recovery of damaged California ecosystems.

The Wildlands Restoration Team is a volunter based organization dedicated to preserving the rich biological diversity of the Santa Cruz Mountains Since its inception in 1990, thousands of people have given their time and resources to help restore this priceless wild habitat.

International Organizations

Similar to the U.S. page, this site has information on invasive species in Australia, including scientific reports, policies, and control information.

GISP, the Global Invasive Species Programme, was established in 1997 to address global threats caused by Invasive Alien Species, and to provide support to the implementation of Article 8(h) of the Convention on Biological Diversity.