Native to the southeast United States, where it occurs from Oklahoma and Texas east to Florida, and north to Maryland.
A perennial aquatic species that reproduces from seeds, but spreads rapidly due to its rhizomes, forming thick stands of vegetation that crowd out other plant life, and potentially block the flow of water in streams or ditches. A common plant in marshy areas, slow-moving streams, and pond banks.
The plants are rooted in the substrate below water, and the foliage may grow to 5 feet above waterline. Thick, fleshy stems may be 2 to 3 feet tall with the long, lance-shaped leaves another 2 feet in length, all growing erect. Flowers grow on long, thick stalks that may be 1 to 2 feet in length, and the white flowers have 3 broad petals and a yellow button of reproductive parts in the center.
Characteristicts Important to Control:
A systemic herbicide registered for use over water will be needed to control this plant where it is growing in an undesirable location. Physical removal of the dead plant material will still be necessary to open a channel of water to allow it to flow properly.