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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

Treatment Species

The city is managing these species for eradication.

Orange Hawkweed

Hieracium auranticum

Policeman's Helmet

Impatiens glandulifera

Blessed Milk Thistle

Silybum marianis


Galega officinalis

Water Primrose

Ludwigia peploides ssp. montevidensis

Giant Hogweed

Heracleum mantegazzianum

False Brome

Brachypodium sylvaticum

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.