Pasco, WA Landscaping Rules: Grass Height Limits (2026)

Pasco does not set a manicured-lawn standard, but it does cap overgrown vegetation through its nuisance code. PMC 12.12.110 (Nuisance declared - Violation) provides that weeds, brush or uncultivated vegetation grown generally in an area to a height of 12 inches or more above the ground, or grown to such an extent as to be a menace to public health, safety, welfare or order, is a public nuisance. The same section also declares as nuisances vegetation that overhangs or obstructs a sidewalk, street or alley, and dead or dying vegetation that is a fire hazard. The city's own Common Code Violations page reinforces this, listing "weeds in excess of 12 inches" and "weeds growing onto other properties" as frequently cited violations, along with dead or dying landscaping such as lawns and trees. It is the duty of the owner, occupant or person in control of the property to abate the nuisance by destroying, removing or trimming the growth. Enforcement is generally complaint-driven; abatement resolutions are not passed until the owner is given at least 10 days notice. Note the 12-inch trigger applies to overgrown weeds and uncultivated vegetation, not to a maintained lawn kept below that height.