California maintains a state-level list of noxious weeds and invasive plants regulated by the California Department of Food and Agriculture. Alameda County follows state regulations and also participates in regional invasive species management through the Alameda County Weed Management Area.
The California Department of Food and Agriculture (CDFA) maintains a list of noxious weeds rated by their invasiveness and impact. These are classified as A-rated (eradication or containment required), B-rated (containment at local discretion), and C-rated (monitored). Key prohibited species relevant to Alameda County include yellow starthistle, Scotch broom, French broom, pampas grass, Cape ivy, and various species of Genista. The Alameda County Weed Management Area (WMA) coordinates invasive plant management across the county, working with local agencies, land managers, and volunteer groups. California also has the Cal-IPC (California Invasive Plant Council) which maintains an inventory of invasive plants, rating them as High, Moderate, or Limited threat. The county's fire prevention programs also target invasive species that increase wildfire risk, particularly in the East Bay hills area.
CDFA A-rated noxious weeds must be eradicated or contained where found, and property owners may be required to treat infestations at their own expense. Failure to manage invasive species that create fire hazards can result in weed abatement orders and fines. County-level fines for non-compliance with weed abatement vary but can be charged to the property owner as a lien.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Castro Valley, CA
Alameda County Code §6.60.050 prohibits repairing, rebuilding, modifying or testing vehicles in residential areas between 7 p.m. and 7 a.m. if it produces so...
Castro Valley, CA
Alameda County §6.60.050 makes amplified sound from any radio, stereo, instrument or device a violation at any time of day if plainly audible 50 feet from th...
Castro Valley, CA
Alameda County Code §6.60.050 limits use of electric or gas leaf blowers, sweepers, vacuums, mowers, trimmers, edgers and hedgers in residential areas to 7 a...
Castro Valley, CA
Alameda County Code §5.08.060 makes it unlawful for any person owning, keeping, or having custody of a dog or other animal to knowingly permit or suffer that...
Castro Valley, CA
Alameda County Code §6.60.080 exempts construction activity from Chapter 6.60 only if it occurs between 7 a.m.-7 p.m. on weekdays and 8 a.m.-5 p.m. on Saturd...
Castro Valley, CA
Alameda County NPO §6.65.030 prohibits parking or storing vehicles on lawns or unimproved surfaces of residential property. Vehicles must be on paved concret...
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