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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

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

Additional Resources

Portland Plant List

Native Plants List and the Nuisance Plants List

iMap Invasives

Geotracking invasive exotic species

Weeds Gone Wild

Alien plant invaders of natural areas

National Arboretum

Invasive plants

Invasive and Noxious Weeds

US Department of Agriculture

The Nature Conservancy

Take on the invaders

Oregon Department of Agriculture

Noxious Weed Control

Invasive Plant and Pest Management

Portland Parks & Recreation

Heartbleed Security Notice

A serious security vulnerability known as "Heartbleed" was recently discovered in OpenSSL, a popular software library commonly used by many websites on the internet to encrypt communication between a user's computer and a web server. is NOT affected by this vulnerability as it does not use the OpenSSL software library. Please rest assured we are dedicated to protecting your security on this website.