The Portland Plant List is comprised of two lists and supporting information: the Native Plants List and the Nuisance Plants List. Both plant lists are integral to the City of Portland’s natural resource protection program and invasive species management strategy. The plants identified on the Nuisance Plants List are prohibited from being planted within the Environmental Overlay Zone, Greenway Overlay Zone, and the Pleasant Valley Natural Resources Overlay Zone. Click here to find your zoning. In addition, species on the Nuisance Plant List cannot be planted as street trees or be installed in City required landscaping areas.
Trees on the Nuisance Plants List:
- Nuisance trees include any subspecies, varieties, or cultivars of species on the Nuisance Plants List.
- No permit is required to remove nuisance trees on private property.
- A permit is required to remove trees on City rights-of-way.
- Permits are not issued to plant nuisance trees in City rights-of-way.
Norway maple Acer platanoides
tree-of-heaven Ailanthus altissima
cutleaf birch Betula pendula
English hawthorn Crataegus monogyna
English holly Ilex aquafolium
golden chain tree Laburnum wateri
empress/princess tree Paulownia tomentosa
white poplar Populus alba
sweet cherry Prunus avium
English laurel Prunus laurocerasus
black locust Robinia pseudoacacia
European mountain ash Sorbus aucuparia
Siberian elm Ulmus pumila