Pomona, CA Landscaping Rules: Weed Ordinances (2026)

Sec. 18-222(9) declares all weeds, rubbish, and refuse on sidewalks, parkways, and alleys a public nuisance and puts the abatement duty on the property owner abutting that strip, not the city. Sec. 18-222(10) reaches vegetation on the parcel itself: any overgrown, unmaintained, under-maintained, dead, decayed, diseased, or hazardous tree, weeds, grass, or vegetation is a designated nuisance if it may harbor rats, vermin, excessive insects, or other disease carriers; obstructs a motorist's or pedestrian's line of sight; constitutes or promotes blight; creates a danger or attractive nuisance; or constitutes or promotes a fire hazard.

The code sets no numeric height limit; the standard is condition-based, so a lot can be cited over dead brush or spared over maintained groundcover depending on which of the five triggers applies. Enforcement follows the same procedure as other Chapter 18 nuisances: a code compliance officer serves a written notice of abatement under Sec. 18-225 describing the vegetation condition, citing Sec. 18-222, and setting a compliance deadline; the property owner has ten calendar days from service to file a no-fee appeal with the city clerk.

Sec. 18-223 allows the city to abate by having the owner cut, remove, or otherwise correct the vegetation, and that remedy is not exclusive of any other civil or criminal action. Maintaining the nuisance past the compliance period is punishable under Sec. 18-221(d), and the city can record a Declaration of Substandard Property against the parcel if the condition is not corrected.