This Class C noxious weed is widespread in western Washington. Control is recommended, but not required in King County.

King County produced an ivy control bulletin (742 KB Acrobat file) covering plant biology and control information.

For more information about English ivy and its cultivars, please see the written findings of the WA State Noxious Weed Control Board.

Read a list of ivy alternatives (453 KB Acrobat file, 1 min 6 seconds on 56K modem) for your garden or landscape.

The Nature Conservancy has produced a detailed information sheet on English Ivy and another great fact sheet on ivy is available from the National Park Service. For more detailed ivy photos, see the Bioimages website on English ivy. Also, read ivy-related press.