Hydrilla was introduced in the 1950's as an aquarium plant. Hydrilla branches profusely and after reaching the surface it extends across it forming thick mats. How does hydrilla spread? By the 1970's it had already spread to … • Chemical Control Herbicides offer an effective control for hydrilla and are often fast acting. Hydrilla, Hydrilla verticillata, is an invasive aquatic weed native to Asia. Hydrilla is an agressive and competitive colonizer. "Hydrilla completely chokes out our waterways and impacts all the things we enjoy,” said Michael Greer, USACE Buffalo District project manager." Turtles, in particular, love the weed as do some species of pond snails and crayfish. Hydrilla is notoriously difficult to control and eradicate without serious chemical herbicides; however, there are ways you can remedy hydrilla at home without spraying dangerous chemicals. The teeth make Hydrilla feel rough when drawn through your hand from base to tip. Hydrilla: Hydrilla verticillata Appearance: Hydrilla is a submersed, much-branched, perennial herb, usually rooted but frequently with fragments seen drifting in the water. Hydrilla has one or more teeth on the underside of the midrib, neither Elodea nor Egeria have these midrib teeth. It affects water quality, the economy, businesses, hydropower and flood reduction - ultimately our health and our wallets." The plant may form small tubers. It was released in waterways of Miami, Florida and spread to Tampa, FL soon after. Grass carp will munch through the weed. There are whorls of 4-8 pointy leaves with coarse teeth along the edges. Hydrilla once was used as an aquarium plant, and has become a weed of economic importance. The dense foliage of the weed is also useful as shelter for aquatic animals such as fish, frogs, turtles and a multitude of insects. Stems are snaky and numerous, floating in a tangle on the surface of the water. Hydrilla has extremely effective methods of propagation. Hydrilla tissue is 90% water with both male and female flowers on a single plant. It uses photosynthesis (turns sun, water, and Carbon Dioxide into sugars). The dense foliage of Hydrilla can form mats that intercept sunlight, thereby displacing native aquatic plants. Hydrilla is often confused with the native Elodea or the non-native Egeria. Hydrilla is a plant that infests lakes and other bodies of water, growing rapidly and overtaking the waterway if left unchecked. Hydrilla can reproduce by fragmentation, from seeds, from turions (axillary buds), and from tubers. Unfortunately, the fish does not eat only hydrilla and also will consume most submersed and emersed aquatic plants once hydrilla is depleted. Hydrilla is a perennial plant that forms dense colonies and can grow to the surface in water over 20 feet deep. Stems can be more than 35 feet long. Regulated by the EPA and applied by certified applicators it has been deemed a safe option for control. In mid to late summer hydrilla produces tiny white floating flowers. Fresh water carp. Some animals eat Hydrilla weeds. Flowers of Hydrilla are much smaller (1/4 inch in diameter) than Egeria. Hydrilla is a producer, like most green plants, so it doesn't actually "eat" anything. eats hydrilla ? The dependence between snails and Hydrilla Just look at your Treatment. What does hydrilla look like? It has long intertwined stems that form dense mats. Leaves are narrow with some serration, 1/8 to 3/8 inch long and have spines on the underside of the midrib. Hydrilla is a perennial plant with dense mats of stems that grow in water over 20 feet in depth. Hydrilla has a creeping root-like underground stem or rhizome that is off-white to yellowish. 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