Aquatic plants ›


General Infomation

A common perennial with stout rhizomes and erect stems. Widespread throughout North America.

Biological Control

Biological Control of Aquatic Weeds with Triploid Grass Carp

Grass carp may feed lightly on weeds in this group, but control is usually unacceptable.



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Species Data


Can reach 5 to 6 ft in height. Grows equally well on mineral and organic soils. May be considered a pest plant because it forms large colonies, while excluding other plants.


Flat, ribbonlike, and arise from ground level. Linear in shape, and sessile to the stem.


A brown terminal spike that persists for months. At the end of the season, the spike degrades into a white fuzzy mass.

Aquatic Plants App

Whether you're a professional botanist or a casual nature enthusiast, the NC State University (NCSU) Aquatic Weeds app has detailed information on a wide variety of aquatic weeds to assist in identification.