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VIRTUAL FIELD GUIDE >> Noxious Weed List >> Eurasian Watermilfoil

Eurasian Watermilfoil (Myriophyllum spicatum)

A suction dredge can "vacuum" the weed from lake bottoms.
A suction dredge can "vacuum" the weed from lake bottoms.

Eurasian watermilfoil is gaining a foothold in Idaho's lakes, ponds, rivers and other waterways. There has been approximately 4,000 surface acres of the plant identified through surveys that have been conducted in the state. In 2006, the Idaho State Legislature passed a bill that allows for $4 million in funding to control Eurasian watermilfoil in Idaho.

Eurasian watermilfoil is Idaho's only listed aquatic noxious weed. It is a native of Europe, Asia and Northern Africa. It was introduced into the United States in the late 1800's through the Aquarium Trade.

Eurasian watermilfoil can form a dense mat on waterbodies.
Eurasian watermilfoil can form a dense mat on waterbodies.
Photo Courtesy of Doug Freeland

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