Corona, CA Landscaping Rules: Weed Ordinances (2026)

Corona Fire Department administers the annual Weed Abatement Program in cooperation with Code Enforcement. Each spring, parcels with a history of overgrowth or located in the Wildland-Urban Interface (WUI) receive a notice to abate weeds, dry grass, dead brush, and combustible debris. The standard requirement is to mow vegetation to no more than 4 inches in height, clear a 30-foot defensible space around all structures (Zone 1) and a reduced-fuel zone out to 100 feet (Zone 2) per PRC §4291 and CMC fire code adoption. Property owners have approximately 30 days from the notice date to comply. After the compliance deadline, the city's contractor performs the abatement and the cost (typically $0.05-$0.15 per square foot plus a $300-$500 administrative fee) is billed to the owner; unpaid bills become a lien on the property and are added to the Riverside County tax roll. The program runs roughly April through October. Vacant lots, equestrian properties, and hillside parcels are common targets. Owners can pre-empt notices by hiring their own crews. Burning of weeds is prohibited within city limits.