County-based Weed Management Areas (WMAs) have formed in every part of the state. Follow the links below to learn more about each WMA, or see background on the WMA program. Links go to the WMA’s own website if it has one or to a simple profile on our website. Help us keep these profiles up to date! Notify us of any changes by emailing info@cal-ipc.org.
Statewide WMA Meetings
View video recording for the 2023 Statewide WMA Meeting
View video recording and presentations for the 2022 Statewide WMA Meeting
View video recording and presentations for the 2021 Statewide WMA Meeting
View presentations for the 2020 Statewide WMA Meeting
View presentations for the 2019 Statewide WMA Meeting.
Regional EDRR Priority Targets
This map and document with regional invasive plant EDRR targets was updated in October 2021, in collaboration with the California Department of Food and Agriculture, County Agricultural Commissioners, and Weed Management Areas. We encourage you to contribute observations of regional EDRR weed species!
Regional partnerships
- Bay Area Region
- Central Coast Region
- Central Sierra Region
- North Central Region
- North Sierra Region
- Northwest Region
- South Central Coast Region
WMAs
- Alameda-Contra Costa WMA
- Amador WMA (inactive)
- Alpine & Upper Carson WMA
- Butte County WMA
- Central Sierra Partnership Against Weeds WMA
- Colusa, Glenn & Tehama Counties WMA
- Del Norte WMA
- Eastern Sierra WMA
- El Dorado County Invasive Weed Management Group
- Humboldt County WMA
- Imperial WMA
- Kern WMA
- Kings Partnership Against Weeds
- Lake Tahoe Basin WMA
- Lake WMA
- Lassen County Special Weed Action Team (SWAT) (inactive)
- Los Angeles County WMA
- Low Desert WMA
- Marin Sonoma WMA
- Mendocino WMA
- Modoc WMA
- Mojave WMA
- Monterey WMA
- Napa County WMA
- Nevada & Placer Counties WMA
- Northern San Joaquin Valley WMA
- Plumas & Sierra Counties WMA
- Sacramento County WMA
- San Benito County WMA
- San Diego WMA
- San Francisco WMA
- San Luis Obispo WMA
- San Mateo WMA
- Santa Ana River & Orange County
- Santa Barbara WMA
- Santa Clara WMA
- Santa Cruz WMA
- Shasta County WMA
- Sierra-San Joaquin Noxious Weed Alliance
- Siskiyou County WMA
- Solano County WMA
- Trinity WMA
- Tulare County WMA
- Ventura WMA
- Yolo County WMA
- Yuba & Sutter Counties WMA