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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

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

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How bad is it?

giant hogweedGiant hogweed is a significant concern in Europe, and particularly Britain and Ireland. In the Pacific Northwest, though, comprehensive and tenacious management have removed giant hogweed from being a widespread threat. The points on the Portland map represent a handful of new or noticeably managed patches. Nearly all remaining points are a patch with just a few seedlings, perhaps an older rosette, or are only being monitored (because they have no plants).

Map of confirmed Hogweed locations in Portland