Variable-leaf pondweed

Common Name(s):
Variable-leaf pondweed, Water-thread pondweed
Scientific Name:
Potamogeton diversifolius
Family:
Potamogetonaceae
Growth Traits:
Native, perennial, warm season
Description: A rooted plant that has very narrow submerged leaves about 0.5 to 3 inches long and may or may not have floating, elliptical leaves that are about 0.5 to 1.5 inches long. It typically does not grow in water more than about 5 feet deep. It is a desirable plant because it provides good habitat for small fish and invertebrates, which are eaten by fish and waterfowl. The seeds and vegetative parts are eaten by waterfowl.
Chemical Control Options: Endothall, fluridone, imazamox, diquat, imazapyr, bispyribac or flumioxazin.
Mechanical Control Options: Physically removing it is only temporarily effective due to its ability to come back from roots and seeds in the water.
Biological Control Options: Variable-leaf pondweed is easily controlled by grass carp because it is one of their preferred foods.