Pasco, WA Landscaping Rules: Weed Ordinances (2026)

Weed control in Pasco is enforced through two layers. Locally, the city's nuisance code declares weeds, noxious weeds, grass and other vegetation a nuisance when it constitutes a fire hazard, encroaches on sidewalks or neighboring properties, damages public improvements, impairs the visibility of traffic signs or signals, and/or has reached a height of 12 inches (PMC 12.12.110 and the city's Common Code Violations guidance). Owners must abate by destroying, removing or trimming the growth, with at least 10 days notice before the city abates and bills costs. On top of city rules, Washington's noxious-weed statute (Chapter 17.10 RCW) requires every landowner - public and private - to control and, for Class A weeds, eradicate state-designated noxious weeds. This is enforced by the Franklin County Noxious Weed Control Board, headquartered at 502 Boeing Street in Pasco. Under RCW 17.10.170, if a landowner fails to take prompt and sufficient action after written certified-mail notice (at least 10 days), the county weed board may control the weeds at the landowner's expense and may place a lien on the property. The board's stated policy is to work cooperatively with landowners before resorting to enforcement.