Himalayan Blackberry

Scotch Broom

Himalayan blackberry, Scotch broom and Japanese knotweed aggressively grow along the shoreline. They will outcompete most other vegetation. In most cases they should be removed.

Japanese Knotweed

Spartina Invasion Spartina is an invasive cordgrass that is taking over tideflats in Puget Sound and coastal Washington, altering natural fish and shellfish habitats and excluding native vegetation. If you see circular clumps of grass growing in a mudflat it may be spartina.

Spartina

If weeds are growing on an unstable bank or bluff, be sure to get some professional advice and have a revegetation plan in mind before clearing the slope.

Free Advice Contact your county weed control board or the Washington Department of Agriculture for technical assistance and free advice about getting rid of unwelcome plant guests. Washington State Noxious Weed Control Board (253) 872-2972     Clallam County Weed Control Board (360) 417-2442 E-mail: Cathy Lucero     Island County Weed Control Board (360) 321-5111, ext. 211 E-mail: Gloria Wahlin     Jefferson County Weed Control Board (360) 379-5610, ext. 205 E-mail: David Deardorff     King County Weed Control Program (206) 296-0290 E-mail: Jane Wentworth Web site: Noxious Weed Control Program     Pierce County Weed Control Board (253) 798-7263 E-mail: Thomas A. Bertram     San Juan County Weed Control Board (360) 376-4095     Skagit County Weed Control Board (360) 336-9430 E-mail: William Rogers     Snohomish County Weed Control Board (425) 338-2400     Thurston County Weed Control Board (360) 786-5576 E-mail: Rick Johnson     Whatcom County Weed Control Board (360) 354-3990

Noxious Weed Control Board, Washington State. Weed links, laws, and information.

Noxious Weed Control Program, King County Department of Natural Resources. Weed lists, links, and information.

Poison Oak, Wayne's Word, Summer 1999. Poison oak grows along Puget Sound bluffs. The fascinating facts and photos at this excellent site will help you identify and understand poison oak.

The Puget Sound Expedition, A Search For Non-Native Marine Species In Puget Sound. The Puget Sound Expedition found 39 non-indigenous species in Puget Sound, as well as an additional 24 species of uncertain origin.