About Invasive Plants

Invasive plant profiles and other resources

• Invasive Plants Poster
• Oregon Noxious Weed Profiles
• Portland Plant List (Native and Nuisance)
• The Problem With Invasive Plants
• Your Role in Invasive Plant Control
• Invasive Plant Profiles

Early Detection, Rapid Response

EDRR Program

• Treatment Species
• Containment Species
• Watch Species
• Invasive Species Resources

Required Eradication List

Invasive plant species property owners are required to remove

• Required Plant Eradication List
• Fact Sheet
• 1. Russian Knapweed
• 2. False-brome
• 3. Italian Thistle or Slender Flowered Thistle
• 4. Jubata Grass
• 5. Paterson's Curse
• 6. Giant Hogweed
• 7. Orange Hawkweed
• 8. Meadow Hawkweed (formerly listed as Yellow Hawkweed)
• 9. Policeman's Helmet
• 10. Scotch Thistle
• 11. Common Reed
• 12. Kudzu
• 13. Blessed Milk Thistle
• 14. Saltcedar
• 15. Gorse

Additional Resources

More invasive plant control information and resources

• Native Plant Resources
• 4 County Cooperative Weed Management Area
• East Multnomah Soil & Water Conservation District
• Invasive and Noxious Weeds
• Invasive Plant and Pest Management
• National Arboretum
• Oregon Department of Agriculture
• Portland Plant List
• The Nature Conservancy
• Weeds Gone Wild
• West Multnomah Soil & Water Conservation District

Get Involved

What you can do to help control invasive plant species

• Columbia Land Trust
• Columbia Slough Watershed Council
• Friends of Mt. Tabor Park
• Friends of Trees
• Friends of Tryon Creek
• Johnson Creek Watershed Council
• Metro
• Portland Parks & Recreation
• SOLVE

Portland's Invasive Plant Management Strategy

Invasive Plant Policy Review and Regulatory Improvement Project Report

Workplan and invasive plant reduction goals for Portland