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Aquatic plants

Index for noxious weeds found in and around water in King County.

While the usual means of spreading apply to them too, aquatic weeds can often find their way into the ecosystem by someone dumping their aquarium into a local body of water. These rapidly spreading plants can fundamentally change the area. Aquatic weeds can contribute to flooding, habitat destruction, and changing the chemical make-up of a river or wetland.

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Need help?

Browse the list of noxious weeds below. If you do not see your plant here, try the other categories on our main index page or email us a photo at noxious.weeds@kingcounty.gov.

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