For brief control information, see Efficacy of Herbicide Active Ingredients Against Aquatic Weeds (EDIS Pub #SS-AGR-44)
Parrot feather is not native to Florida. It’s easy to see why this emersed aquatic plant is called parrot feather. Its delicate, feathery bright-green leaves grow in profusion, in or out of the water. It is believed that parrot feather was introduced as an aquarium plant. It is now found in fresh waters throughout the state. Parrot feather leaves are oblong and deeply cut and have a filiform, feathery appearance. Leaf color is bright blue-green. Like most other watermilfoils, parrot feather leaves are arranged in whorls about the stem. Its leaves are in whorls of 4 to 6. Stems can be 5 feet long. They trail along the ground, becoming erect and leafy at the ends. Parrot feather leaves are feathery and blue-green. Parrot feather leaves are arranged in whorls of 4 to 6 leaves about the stem. Its viney stems can be 5 feet long.