Parrot’s-feather

Common Name(s):
Parrot’s-feather, Water feather
Scientific Name:
Myriophyllum aquaticum
Family:
Haloragaceae
Growth Traits:
Introduced, perennial, warm season
Description: An introduced plant in the watermilfoil family. A large portion of parrot’s-feather can extend above the water’s surface, unlike Eurasian watermilfoil. The leaves are whorled and resemble the shape of a bird’s feather. Parrot’s-feather is a problematic plant in many bodies of water because it can form dense colonies. It usually spreads from fragments. Parrot’s-feather provides good habitat for invertebrates, which are eaten by fish and waterfowl. However, due to its ability to displace native plants, it is considered an undesirable plant.
Chemical Control Options: 2,4-D, copper with diquat, endothall, fluridone, diquat, imazamox, imazapyr, flumioxazin or triclopyr.
Mechanical Control Options: Physically removing parrot’s feather is only temporarily effective due to its ability to come back from remaining fragments in the water.
Biological Control Options: Diploid grass carp are fairly effective at controlling parrot’sfeather, but the effectiveness of triploid grass carp is less certain.