Riverside, CA Landscaping Rules: Weed Ordinances (2026)

Riverside Municipal Code (RMC) Chapter 6.15 — Abatement of Public Nuisances — defines overgrown weeds and dry grass as a nuisance subject to abatement. The City's Public Works Weeds page states verbatim: 'Weeds on private property, in right-of-way areas bordering a residence and in the alleys from the back of the resident's property to the center line of the alley are the responsibility of the property owner.' The Public Works Street Services Division abates weeds only on non-landscaped CITY-owned property; the Landscape Division handles landscaped medians and public rights-of-way NOT bordering a residence. Enforcement on private property is by the CEDD Code Enforcement Division, which issues a notice-to-abate followed by administrative citation and, if unabated, City contractor abatement with a special-assessment lien recorded against the parcel. Riverside lies within Riverside County's wildland-urban interface; properties in or adjacent to a Very High Fire Hazard Severity Zone (per CAL FIRE / Cal. Gov. Code §51178) are additionally regulated by Riverside County Fire Department Ordinance No. 787 (Hazardous Vegetation), which mandates an annual fuel-modification (typically 30 feet of clearance, dead vegetation removed, grass cut to ≤4 inches) by an early-summer compliance date. State law Public Resources Code §4291 imposes the 100-foot defensible-space standard in state-responsibility-area parcels.