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Washington State Weeds

Curlyleaf Pondweed

Potamogeton crispus

Family Name:


Class: C
Other Names: curly pondweed
 Why is it a noxious weed? It is an invasive plant that forms surface mats, interfering with aquatic recreation. Dense colonies can restrict access to docks and sport fishing. Curly-leaf pondweed has been noted as one of the most severe nuisance aquatic plants in the Midwest.

More Information:




Visit Washington State Noxious Weed Control Board Here