Eurasian Watermilfoil Hybrid

Atlantic Ivy

Myriophyllum spicatum x Myriophyllum sibiricum

Family Name: Haloragaceae
Class: C
Other Names: watermilfoil hybrid
 Why is it a noxious weed? This perennial hybrid, a cross between the invasive Eurasian watermilfoil (Myriophyllum spicatum) and the native northern watermilfoil (Myriophyllum sibiricum), can result in a variety of strains--some that are aggressive and tolerant to some herbicide control treatments. Some genetic strains of this hybrid can be even more aggressive than Eurasian watermilfoil. For further information about identifying and controlling Eurasian watermilfoil hybrid, please contact Jenifer Parsons with the Washington Department of Ecology.

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Visit Washington State Noxious Weed Control Board Here