Hydrilla is an aquatic freshwater plant. This plant grows to the surface of the water from a depth as great as 20 feet. Hydrillas are a common aquatic plant and can grow in a variety of different water sorts. Hydrillas can grow in as little as a few inches of water or in as much as 20 feet of water. The Hydrilla can flourish in either oligotrophic (low nutrient) or eutrophic (high nutrient) water conditions.  
 
The Hydrilla is suited to more mild climates as it will only tolerate temperatures between 20 C and 27 C. Upon extending to the surface, the Hydrillas full branches spread out to form a thick mat. The Hydrilla can have underwater stems that reach up to 25 feet in length. Rhizomes, another name for the roots, are off-white to yellowish in color. off-white or yellowish in color. | The roots or Rhizomes of the Hydrilla are frequently yellow or off-white in color. } The Hydrilla has several alternatives when it comes time to procreate. When it is time to multiply the Hydrilla accomplishes this in one of four ways: fragmentation, seeds, tubers and turions (auxiliary buds).
 
When compared with other plants the Hydrilla has numerous advantages. Only one percent sunlight is need for the Hydrilla to grow. Hydrillas absorb a great deal of foods from the water leaving small for the native floras. Hydrillas can grow very rapidly, contending with the indigenous species, and that’s why it is believed a pestilent pest. Hydrilla is especially dangerous because it can almost entirely take over a body of water before appearing on the surface. When it covers a big area, all the aquatic plants that fall under it die due to the lack of sunshine or nutrition. When Hydrilla encompasses a large area, all the other aquatic plants fail because the do not receive enough sunlight or nutrients.
 
Each year, millions are spent on herbicides and harvesting all in an campaign to control the growth and spread of Hydrilla. Since it harms the flora around it, individuals can’t even fish around areas these grow. Hydrilla is responsible for slowing water flow and congesting irrigation and flood- control canals. Hydrilla impedes swimmers, boatmen and fishermen alike. Mass amounts of Hydrilla can severely lower the oxygen levels of the water it is growing in.
 
The Elodea and Egeria are oftentimes mixed up with the Hydrilla. Hydrillas have one or more teeth on the undersurface of the midrib. But for Elodea and Egeria, this is not present. Because of the teeth, Hydrilla will feel rough. Hydrilla will feel rough due to the presence of the teeth on the undersurface of the plant. The flowers the Egeria create are also larger than the Hydrilla. 
 
Hydrilla is eaten by macro and micro invertebrates. When they die and break up they turn into food for species like ducks, fish, amphibians, reptiles and other wildlife species. When this flora dies, their disintegration is done by bacteria and fungi and provides food called “detritus” for many aquatic invertebrates. Ducks oftentimes eat Hydrilla turions and tubers, but this is not a substantial source of food. Ducks will ofttimes feed on the tubers and turions of Hydrilla, but they don’t make a great diet.