An Official Website of the Commonwealth of Kentucky
Water Stargrass (Heteranthera dubia) is grass-like plant with thin branching dark-green stems and alternate leaves with no midvein.. It can grow up to 6 feet long and can form large floating colonies. Flowers rise above the surface and are bright yellow, star-shaped, with 6 narrow petals.
Mechanical Options
Water Stargrass can be controlled through cutting and raking, dyes or fertilizers or barriers.
Information on Mechanical Treatment of Aquatic Vegetation
Biological Options
Grass carp will consume Water Stargrass and are excellent at controlling it.
Information on Biological Treatment of Aquatic Vegetation
Chemical Options
The active ingredients that have been successful in treating Water Stargrass include: Endothall (E), Fluridone (E), Glyphosphate (E), Imazamox (G) and Penoxsulam (E). E = excellent, G = good
Information on Chemical Treatment of Aquatic Vegetation
Return to the submerged vegetation page