Azolla, Mosquito Fern
(Azolla Caroliniana)
Native
Mosquito fern floats on the surface, forming large colonies, and can be green or red to brown.
Management Options
Click here for more information on how to control mosquito fern.
Description
Mosquito fern is a free-floating plant that grows in still waters, slow-moving waters, or resting on mud. The leaves are oppositely arranged around the stem. There are two lobes: one floating and one below the water’s surface. Leaves are green when actively growing and red to brown when stressed. Mosquito fern is often found mixed with duckweed and/or watermeal. It can cover the whole pond quickly, blocking out sunlight and oxygen (leading to fish kills).
Location
Mosquito fern can be found in much of the United States: northeast, southeast, south, and midwest.
Propagation
Seeds
Management Options
Click here for more information on how to control mosquito fern.