Idaho in Action / Aquatic Invasive Species / Eurasian Watermilfoil

Eurasian Watermilfoil

Eurasian watermilfoil (EWM) is one of the most problematic invasive aquatic plants in North America. EWM out-competes native vegetation and degrades aquatic habitats by reducing biodiversity. EWM forms dense canopies of growth in the water, which can make boating and fishing impossible and degrade property values. Treatments have been complicated by the identification of a Eurasian and native milfoil hybrid that grows aggressively and is harder to control. ISDA is investigating this milfoil hybrid and continues to develop more efficient control techniques.


2016 Eurasian Watermilfoil treatment locations in Northern Idaho


Banner and Photos: Tom Woolf, ISDA