A noxious weed is a plant defined as a pest by law or regulation. All of the designated noxious weeds are invasive and need to be eradicated or controlled. The State of California has compiled the Noxious Weed list and assigned a rating to each reflecting California Department of Food and Agriculture's view of the statewide importance of the pest, likelihood of successful eradication, and present distribution. The revised language of the rating policy assigns a rating of A, B, C, Q, D, and W.
How Does Contra Costa County Control Noxious Weeds?
Contra Costa County Department of Agriculture is committed to eradicate all weeds within its borders with an "A" or "Q" rating. We also place special emphasis on weeds with a "B" rating. Although we devote little effort to "C" rated weeds, we strongly encourage landowners to control any noxious weeds existing on their property.
Some of the Noxious Weeds Contra Costa County Department of Agriculture focuses on are: