Where To Find Hydrilla
In the United States, Hydrilla is found primarily in the springs, ditches, marshes and lakes of southern states up to 40 degrees North latitude. This invasive, non-native is rapidly moving north from present infestations in California, Arizona, Gulf Coast and Southeast states north to Washington D.C.
A wide variety of environmental conditions within flowing, stagnant, fresh, tidal, subtropical and temperate areas contain habitat suitable for Hydrilla. North and South America, New Zealand, Pacific Islands, Asia, Europe, Africa and Australia have Hydrilla.
Hydrilla can grow in oligotrophic (low nutrient) to eutrophic (high nutrient) chemical conditions. Hydrilla has a high resistance to salinity in tidal wave areas, up to 7% the salinity of sea water. Hydrilla can tolerate a wide pH range, but does best in pH 7. Hydrilla is found in light conditions as low as 1% of sunlight and depths of only a few inches to 50 feet.
Identifying Hydrilla
