Hydrilla

Hydrilla is a freshwater plant. The Hydrilla will grow to the waters surface from a depth of up to 20 feet. This is a very standard flora because it can almost grow in any freshwaters such as springs, rivers, fens, ditches, and lakes. Hydrillas can grow in as small as a few inches of water or in as much as 20 feet of water. This flora can grow in oligotrophic (low nutrient) to eutrophic (high nutrient) conditions in water.  
 
The tolerance temperature level of a Hydrilla is 20o C to 27o C; therefore, it cannot stand harsh climates. This freshwater flora, Hydrilla, branches profusely and when it gets to the surface, it spreads its branches and forms dense mats. The Hydrilla can have submerged stems that reach up to 25 feet in length. The Hydrilla roots, also know as Rhizomes, are  frequently than not off-white or yellowish in color. | The roots or Rhizomes of the Hydrilla are frequently yellow or off-white in color. } The Hydrilla has numerous choices when it comes time to multiply. Fragmentation, seeds, tubers and turions (auxiliary buds) are the primary ways the Hydrilla propagates.
 
When compared with other floras the Hydrilla has numerous advantages. The Hydrilla only needs 1% sunshine to grow. Hydrillas absorb a great deal of nutrients from the water leaving little for the indigenous plants. Hydrillas can grow very quickly, competing with the native species, and that’s why it is considered a pestilent pest. Hydrilla is especially dangerous because it can almost entirely take over a body of water before appearing on the surface. Hydrillas will ofttimes choke out native marine plants because they take up so much surface area absorbing the sunshine and foods.
 
Each year, millions are spent on herbicides and harvesting all in an campaign to check the growth and spread of Hydrilla. Hydrilla harms the flora in the surrounding area making it near impossible for fishermen to fish. Hydrilla is responsible for slowing water flow and congesting irrigation and flood- control canals. Swimming, boating and fishing can not be properly done in areas when Hydrilla has taken hold. Oxygen levels in waters full of Hydrilla can often drop seriously.
 
The Elodea and Egeria are ofttimes confused with the Hydrilla. In the case of a Hydrilla, there is one or more teeth located at the bottom of the midrib. Elodea and Egeria do not have teeth present on their undersides. Neither Elodea nor Egeria has teeth on their undersurface. Due to these teeth, we feel the roughness of these plants when we rub over from its base to the tip. The flowers the Egeria create are also larger than the Hydrilla. 
 
Macro and micro invertebrates feed on Hydrilla. When they die and break up they turn into food for species like ducks, fish, amphibians, reptiles and other wildlife species. Bacteria and fungi break up Hydrillas that die naturally and then create a food called junk, which many marine creatures eat. Many ducks consume Hydrilla turions and tubers, but it is not believed a fine wildlife feed.