Parrot´s feather, AKA Milfoil, is a very distinctive looking plant that can grow up to 30cm above the water’s surface, and up to 2m below. It can also invade muddy banks. The above-water plant dies back in winter, but is found submerged throughout the year.
Leaves are arranged in circles (whorls) of 4 – 6 leaves, and are grey-green and feathery. The leaves above the water’s surface are stiffer than those below. Stems are brittle, with brown roots.
Parrot’s feather (Myriophyllum aquaticum) can survive in a variety of conditions and can also grow onto wet mud banks.
All aquatic weeds present the following threats:
They form thick, dense mats that prevent light from reaching native plants and can be mistaken for solid ground by children and animals.
The thick mats also prevent oxygen from entering the water, drastically reducing oxygen levels, which may kill fish and other aquatic life.
A large infestation greatly reduces access for recreational water activities.
Mats of aquatic weeds often result in a bad smell and reduced visibility in the water.
Dense mats can reduce the flow of water and increase the risk of flooding.
Check, clean and disinfect all equipment, boots, wheels and anything that made contact with the water. This will ensure you don’t carry fragments to other possible habitats.
The control of large infestations of aquatic weeds will require the services of an appropriately certified invasive species control company.
If you encounter parrot’s feather please enter the details into our log.