Overview of Portland's Invasive Plant Management Strategy

Get Involved

What you can do to help control invasive plant species

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

Early Detection, Rapid Response

EDRR Program

• Treatment Species
• Containment Species
• Watch Species
• Controlling Garlic Mustard

About Invasive Plants

Invasive plant profiles and other resources

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

Required Eradication List

Invasive plant species property owners are required to remove

• Required Plant Eradication List
• 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

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

Management Strategy

City of Portland Invasive Plant Management Strategy

• Invasive Plant Strategy Summary
• Invasive Plants Strategy Report
• Invasive Plant Policy Review and Regulatory Improvement Project
• Invasive Plant Management Annual Report
• Maps
• November 2008 Invasive Species Summit