Hydrilla

Hydrilla is a fresh water plant. It is a plant that matures up to the surface in water of about 20 feet deep. This very familiar water plant can be found in all sorts of water: rivers, lakes, fenland, springs and the like. Hydrillas can grow only a few inches in water, but they can also grow to about 20 feet deep underwater. The Hydrilla can thrive in either oligotrophic (low nutrient) or eutrophic (high nutrient) water conditions.  
 
The tolerance temperature level of a Hydrilla is 20o C to 27o C; consequently, it cannot stand harsh climates. The Hydrilla has abundant branches that spread out upon getting to the surface, molding mats. It might have stems as long as twenty five feet underwater in water! mostly off-white or yellowish in color. | The roots or Rhizomes of the Hydrilla are frequently yellow or off-white in color. }There are many ways a Hydrilla can multiply. Fragmentation, from seeds, from tuber, and turions (auxiliary buds) are ways how this pest reproduces.
 
The Hydrilla has many advantages when likened to other plants. Only one percent sunlight is need for the Hydrilla to grow. Hydrillas absorb a great deal of nutrients from the water leaving small for the indigenous plants. Hydrillas grow quickly, vying with native floras, and are thus believed a noxious pest. The greatest danger of Hydrilla is that it can grow out of control and undetected until it pops out at the surface at the last minute. Hydrillas will oftentimes choke out native marine floras because they take up so much surface area absorbing the sunshine and nutrients.
 
Millions of dollars are spent each year on weed killers and harvesting devices in an campaign to keep this plants growth under control. Individuals can’t fish in areas where Hydrilla is found because it so adversely burdens the other flora life in the area. Hydrilla slows down the water flow and totally overloads irrigation and flood-control canals. Bathing, boating and fishing can not be properly done in areas when Hydrilla has taken hold. Oxygen levels in waters full of Hydrilla can frequently drop seriously.
 
The Elodea and Egeria are frequently mixed up with the Hydrilla. Hydrilla can be identified by the teeth found on the undersurface of the midrib. But for Elodea and Egeria, this is not present. 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 produce are also larger than the Hydrilla. 
 
Hydrilla is eaten by macro and micro invertebrates. Upon dying, these micro and macro organisms break up and become food for other land and aquatic wildlife. When Hydrilla dies naturally, they are decayed by bacteria and fungi and the end result is “detritus” a food for several aquatic invertebrates. Many ducks consume Hydrilla turions and tubers, but it is not considered a fine wildlife feed.