Anaheim, CA Invasive Plant Rules: Prohibited Species (2026)

Plant regulation in Anaheim relies on state law rather than a local prohibited-species list. California Food and Agriculture Code Section 7270 et seq. authorizes the state and counties to designate noxious weeds and require abatement by property owners. The Orange County Agricultural Commissioner can enter property to destroy Class A noxious weeds at the owners expense if the owner fails to act after notice. Common invasive species of concern in Southern California include Arundo donax (giant reed), Cortaderia selloana (pampas grass), Genista monspessulana (French broom), Carpobrotus edulis (ice plant), and Tamarix species (salt cedar). Within the Chino Hills and Santa Ana Mountains wildland-interface areas, Public Resources Code 4291 and Anaheim Fire and Rescue enforce a 100-foot defensible-space clearance that specifically targets flammable invasives. Nursery sales of listed species are regulated at the state level under CDFA plant quarantine rules. Homeowners planning landscape projects near creeks or open space should consult the Cal-IPC Inventory and avoid Do Not Plant species. Violations of state noxious weed law can result in abatement liens against the property, while fire-clearance violations near wildland can trigger Anaheim Fire citations and mandatory brush removal at owner cost.