Invasive Plant Rules in Salem, OR (2026)
1 verified invasive plant rules for Salem, Oregon, sourced directly from the municipal code and official government pages.
Verified from official government sources
Tree-of-Heaven Removal
Salem's tree code names Tree of heaven (Ailanthus altissima) as one of four species specifically excluded from "significant tree" status no matter how large it grows, and the removal-permit rules separately exempt clearing invasive non-native vegetation from riparian corridors.
Salem Excludes Tree of Heaven From Protection
Few RestrictionsSalem Revised Code § 808.005
Significant tree means: ...(c)Any other tree with a dbh of 30 inches or greater, but excluding:(1)Tree of heaven (Ailanthus altissima);(2)Empress tree (Paulownia tomentosa);(3)Black cottonwood (Populus trichocarpa); and(4)Black locust (Robinia pseudoacacia). ... Invasive non-native vegetation means plant species that are not indigenous to Oregon and which, due to aggressive growth patterns and ...
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County ordinances apply to unincorporated areas and may supplement Salem city rules.
Invasive Plant Rules in Marion County →