Still or slow-moving fresh to brackish bodies of water
Every continent except Antarctica and potentially Australia
Least Concern (IUCN Red List)
This species is
to the Truckee Meadows.
Eurasian water-milfoil is considered a noxious weed and is an invasive species. It has long strands of whorled, green leaves and can create a mat cover in still waters. It mainly grows from broken off shoots (shoot fragments), making it very easy to grow or become established in a variety of locations.
The aquatic moth, Acentria ephemerella, eats and damages the milfoil and is sometimes used as a biological pest control.
Eurasian water-milfoil, as its name suggests, is native to Europe and Asia. The plant was accidentally introduced to North America in the 1940s, potentially escaping an aquarium or being brought in on a commercial boat.
Dense areas of Eurasian milfoil can block sun from reaching the depths of bodies of water, which can threaten native photosynthetic species.
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