Oregon State Noxious Weed List

Nuisance (Invasive) Plants in Detail

The Problem With Invasive Plants

Your Role in Invasive Plant Control

How you can help stop the spread of invasive plants

Invasive Plants Poster

A poster identifying common invasive plants with tips to control them

Invasive Plant Profiles

Eleven invasive weeds found in the Portland area

• Yellow Flag Iris
• Tree of Heaven
• Purple Loosestrife
• American Pokeweed
• Parrot Feather
• Japanese Knotweed
• Garlic Mustard
• Fennel
• English Ivy
• Clematis
• Butterfly Bush