Parrot’s Feather (Myriophyllum aquaticum)

Species

Distribution


Parrot’s feather (Myriophyllum aquaticum)

Photo courtesy of GB Non Native Species Secretariat


To view NBN location data click here

Impacts

Pathways
  • Out competes native macrophytes, reducing species diversity.
  • Clogs waterways leading to problems for drainage and access.
  • Introduced as a garden pond plant.
  • Escapes from garden ponds and readily fragments leading to the establishment of new colonies in the wild.
  • Incorrect disposal of garden waste near waterways
  • Possibility of accidental spread by fragments attaching to footwear or fishing equipment including boats and nets.

Management

Prevention

Should not be released in the wild. Dispose of garden and pond waste responsibily. Check vehicles, boats, equipment and clothing for plant fragments when leaving infested sites and clean if necessary.

Physical Control

Mechanical control can be effective in enclosed or slow flowing waterbodies where downstream spread of cuttings can be prevented. Chemical control of remaining plants should be undertaken.

Chemical Control

The Centre for Ecology and Hydrology, Centre for Aquatic Plant Management Information Sheet (Click here to download) states that the plant can be controlled by applications of dichlobenil in spring. Other effective herbicides are those that contain 2,4D amine. Applications of glyphosate later in the season can also be effective.

Note all chemical treatments must be licensed by SEPA.

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