top of page

Eurasian Water-Milfoil

Scientific Name:

Myriophyllum spicatum


Herbaceous Plant


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.

Fast Facts:

  • 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.



Brianna Raggio (research & content)

Alex Shahbazi (edits & page design)

Last Updated:

June 15, 2021 at 10:58:34 PM

bottom of page