Optimum results may be achieved by applying our Dock and Swim Area Products. Another option would be Hydrothol Granular. Apply evenly early in the day under calm, sunny conditions at 60F or higher in accordance with label instructions.
Our lake rakes, including our mechanical LAKEMAID®, are a excellent mechanical alternative to keep Hydrilla plants from ever starting to grow.
If you have any questions or would like to speak to us about hydrilla control, please feel free to call us at: 1-877-428-8898
Hydrilla is very prolific. It can reproduce four ways: Fragmentation, Tubers, Turions, and Seeds (primary reproduction of Hydrilla is vegetatively with seeds being a minor means of reproduction).
Fragmentation is a very efficient means of reproduction that can occur from regrowth of a stem fragment with a single whorl of leaves (up to 50% of the time). Fragmentation is the main reproduction mechanism for Hydrilla.
Hydrilla can also reproduce by potato-like tubers 1/2″ long by 1/2″ broad attached to the creeping root-like stem or rhizome found 30 cm deep in the mud. Hydrilla tubers can remain viable several days out of the water or for over four years in undisturbed sediment.
Dark green, cylindrical, auxiliary buds called turions (or winter buds) measuring about 1/4″ at leaf axils are yet another way Hydrilla reproduces. There is evidence they can survive ingestion and regurgitation by waterfowl and herbicide applications.
Hydrilla can grow an inch per day to densities over 130 tons per acre. Dense growths of Hydrilla stunt bass, panfish and other sportfish. Large masses of Hydrilla reduce flow in drainage canals resulting in flooding, erosion and restricted navigation. Swimming, recreation and property values can be negatively impacted. Hydrilla can tolerate lower temperatures and lower levels of sunlight than some native species. This can allow Hydrilla to establish itself sooner, out-competing and displacing native aquatic plants.