Invasive Plant Rules in Hillsboro, OR (2026)
1 verified invasive plant rules for Hillsboro, Oregon, sourced directly from the municipal code and official government pages.
Verified from official government sources
Prohibited Species
Hillsboro's Community Development Code bars nuisance plants, defined as species that are both invasive and non-native and appear on Oregon's noxious weed list or the Tualatin Soil and Water Conservation District's Weed and Pest Directory, from any landscaping required under Section 12.50.220. The ban applies to Type II and Type III development review in Washington County's Hillsboro; a homeowner's single detached dwelling or middle housing yard is exempt from this particular section.
Hillsboro Nuisance Plant Landscaping Ban
Some RestrictionsHillsboro Community Development Code §§ 12.01.500 (definition of "Nuisance Plants"), 12.50.220(B), (E)(6), (E)(8)
Nuisance Plants. Plants which are both invasive and non-native. Nuisance plants are identified and listed as a noxious weed by the State of Oregon or listed on Tualatin Soil and Water Conservation District's Weed and Pest Directory. ... E. Improvement Standards. ... 6.Nuisance plants as defined in Section 12.01.500 are not permitted for use in any landscaping. ... 8.Natural existing vegetation ...
Looking for Washington County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Hillsboro city rules.
Invasive Plant Rules in Washington County →