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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Room 1000, Portland, OR 97204

Containment Species

The city and its partners are mapping these species and managing them in limited circumstances.


Purple Loosestrife

Lythrum salicaria

Knapweeds

Centaurea diffusa and C. maculosum

Spurge Laurel

Daphne laureola

Knotweed

Polygonum cuspidatum, P. polystachyum, P. sachalinense