Sample of cogongrass on blue background with plant parts labeled.

What is Cogongrass?

Cogongrass (Imperata cylindrica) is a perennial, colony-forming grass that can grow up to 6 ft. (1.8 m) tall. 

Imperata cylindrica is an extremely aggressive invader with the capability of invading a range of sites. It forms dense, usually circular infestations that exclude all other vegetation. It is native to Southeast Asia and was accidentally introduced into the southeast United States in packing material in the early 1900s. It was also intentionally introduced for erosion control and livestock forage. 


Field overrun with cogongrass