Tualatin Municipal Code Chapter 6-04 (Noxious Vegetation) requires every owner or person in charge of property to cut down weeds, grass, brush, and other noxious vegetation as often as needed to prevent it from becoming a fire hazard, going to seed, or unreasonably interfering with neighboring property. Lawns must be kept at no more than 10 inches in height, and the maintenance duty runs March 1 through October 31 each year.
Tualatin Municipal Code (TMC) Section 6-4-090 establishes the property owner's duty: 'It shall be the duty of an owner or person in charge of property to cut down or to destroy grass, shrubbery, brush, bushes, weeds or other noxious vegetation as often as needed to prevent them from becoming unsightly, from becoming a fire hazard, or in the case of weeds or other noxious vegetation, from maturing or from going to seed.' Between March 1 and October 31 of any year, no owner or person in charge of property may allow noxious vegetation to be on the property or in the abutting public right-of-way. TMC 6-4 defines 'noxious vegetation' to include weeds more than ten inches high, blackberry bushes, poison oak/poison ivy, tansy ragwort, and any vegetation that offers rodent or vector harborage, contributes noxious pollens, or constitutes a fire hazard. Lawns (areas containing turf grasses) must be 'kept trimmed to a height of not more than the ten inches' or below the height at which the generation of pollen and the forming of seeds occurs (TMC 6-4 and TMC 6-13-040 for rental housing). Uncontrolled growth on public land or designated private conservation areas maintained for native wildlife habitat is exempted from the nuisance definition. The Tualatin Police Department's Code Enforcement section enforces TMC 6-04 alongside TVF&R when a fire-hazard component is involved.
Violation of TMC 6-04 is a civil infraction processed under Title 7 of the Tualatin Municipal Code (Uniform Civil Infraction Procedure). Property owners are typically notified by Code Enforcement and given a deadline to abate. If abatement is not completed, the City may contract the work and bill the owner, with unpaid charges potentially recorded as a lien against the property. Repeat or willful violations can result in escalating fines under the City's civil penalty schedule.
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