Why Control Hydrilla
Hydrilla is very prolific. It can reproduce four ways (Primary reproduction of Hydrilla is vegetatively with seeds being a minor means of reproduction.): Fragmentation, Tubers, Turions, Seeds
Very efficient reproduction 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 measuring about 1/4" at leaf axils called winter buds or turions 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.
Where To Find Hydrilla
