A
Rank AInvasive; occurs in region but not yet widely distributed. Limited to a few sites; spreads rapidly.
B
Rank BInvasive; more abundant than A but still limited to patches or specific habitats. Spreads rapidly.
C
Rank CInvasive; widely distributed and abundant throughout the region — considered ubiquitous.
D
Rank DLess aggressive than A–C. Persists alongside native species with less impact on the ecosystem.
W
Rank W — WatchMonitor for presence and/or to determine level of invasiveness in the region.
Req. Eradication
Required Eradication ListMust be removed from property per Portland City Code Title 29.