Invasive Plant Rules in Portland, OR (2026)
2 verified invasive plant rules for Portland, Oregon, sourced directly from the municipal code and official government pages.
Verified from official government sources
Prohibited Species
Portland property owners must eradicate every species on the City's Nuisance Plants List, roots, shoots, and seeds included, under the outdoor maintenance requirements of City Code Chapter 29.20.
Portland's Nuisance Plant Eradication Rule
Heavy RestrictionsPortland City Code § 29.20.010(G)
G. Nuisance plants. Eradication, as defined in Subsection 29.10.020 V., is required of all plants identified on the Nuisance Plants List. The City Administrator will adopt administrative rules detailing implementation and enforcement of this provision. H. Trash and debris. Remove, and keep removed, unless specifically authorized by ordinance to do otherwise: 1. All garbage, offal, dead animal...
Tree-of-Heaven Removal
Portland requires property owners to eradicate tree-of-heaven and every other species on the City's Nuisance Plants List under Code Section 29.20.010.G, enforced through the same nuisance-abatement process used for overgrown lawns and rat harborage.
Tree of Heaven Removal Rules in Portland
Heavy RestrictionsPortland City Code Section 29.20.010.G
G. Nuisance plants. Eradication, as defined in Subsection 29.10.020 V., is required of all plants identified on the Nuisance Plants List. The City Administrator will adopt administrative rules detailing implementation and enforcement of this provision. H. Trash and debris. Remove, and keep removed, unless specifically authorized by ordinance to do otherwise: 1. All garbage, offal, dead animal...
Looking for Multnomah County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Portland city rules.
Invasive Plant Rules in Multnomah County →