Corona, CA Landscaping Rules: Weed Ordinances (2026)
Key Facts
- Measurement
- Annual program runs April through October
- Measurement
- Vegetation must be cut to under 4 inches; 30 ft defensible space
- Measurement
- Notice gives ~30 days to comply
- Fees
- Failure results contractor abatement billed owner + admin fee
- Measurement
- Unpaid charges become a tax-roll lien
Summary
Corona Fire runs an annual Weed Abatement Program (CMC 9.04 and 8.20) requiring weeds cut to 4 inches and 30 ft defensible space. Failure leads to contractor abatement billed plus admin fee.
“Noxious weed” means any species of plant that is, or is liable to be, troublesome, aggressive, intrusive, detrimental, or destructive to agriculture, silviculture, or important native species, and difficult to control or eradicate, which the director, by regulation, designates to be a noxious weed. In determining whether or not a species shall be designated a noxious weed for the purposes of protecting silviculture or important native plant species, the director shall not make that designation if the designation will be detrimental to agriculture. (Amended by Stats. 1992, Ch. 556, Sec. 1.
Full Breakdown
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. 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.
Frequently Asked Questions
What if I never received a notice?
Can I do the work myself?
Can I appeal the bill?
Sources & Official References
Other rules in Corona
How Corona compares: Cities with the Strictest Weed and Property Maintenance Rules·California rules heatmap·Compare Corona to another location·View the California landscaping rules overview
See something wrong?
Help us keep this page accurate. If you notice an error or outdated information, let us know.
Weed Ordinances in Nearby Cities
How other cities in Riverside County handle weed ordinances.