CDFA Plant Health

Hydrilla: Program Details

3294 Meadowview Road, Sacramento, CA 95832  •  916-654-0768  •
 wedge Pest Hotline: 1-800-491-1899

Hydrilla is a pernicious aquatic plant which infests natural and man-made aquatic ecosystems. The California Department of Food and Agriculture (CDFA) conducts eradication efforts in nine counties throughout California integrating various methods of control. The largest eradication effort is the infestation in Clear Lake which began in 1994. The Branch has successfully eradicated hydrilla from nine counties.

National Pollutant Discharge Elimination System Permits | Aquatic Weeds

New Invader Threatens California!

                                Learn about the South American Spongeplant

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Non-native Aquatic Weeds that Threaten California

A number of invasive aquatic weeds are either under eradication in California or could cause serious trouble if they get established here. This slideshow provides a brief introduction to their biology, threat and status.

Technical Review Panel for Clear Lake

In late 2009 the Hydrilla Program asked a panel of four outside experts to review the Clear Lake Hydrilla Eradication Project.