Parrot's feather control

Page last updated: Thursday, 10 October 2019 - 1:20pm

Please note: This content may be out of date and is currently under review.

Control methods for parrot's feather (Myriophyllum aquaticum) a declared pest in Western Australia.

Report the presence of this pest before undertaking control

Information about this pest can be found on the parrot's feather: declared pest page.

Chemical requirements

When using any agricultural chemicals please ensure that you always follow instructions on the label and any permit. Users of agricultural chemical products must always strictly comply with the directions on the label and the conditions of any permit. To view permits or product labels go to the Australian Pesticides and Veterinary Medicines Authority website.

Control options

Chemical control options can be found below. For other methods of control please refer to the aquatic weed control page, and the declared plant control handbook.

Chemical control options

Recommended herbicides

Glyphosate; Reglone®

Roundup® Biactive, Razor® (Group M)

Active ingredient

360g/L glyphosate present as the isopropylamine salt

Rate of product

100mL/10L water

Time of application

Actively growing plants

Wetting agent

Do not add wetting agent

Remarks

Effectiveness decreases when more than 25% of the plant is below the water surface. Do not submerge the plants after spraying as this will wash the chemical off the plants. Avoid over spray into clear water.

More information

Use only the approved products over water surfaces. Arsenal Express® approved for aquatic use in New South Wales.

Reglone® (Group L)

Active ingredient

200g/L diquat

Rate of product

40mL/10L water

Time of application

Actively growing plants

Wetting agent

15mL of Agral/10L water

Remarks

Apply as an overall spray wetting foliage thoroughly, use clean water for best results

More information

Use only the approved products over water surfaces

Contact information

Pest and Disease Information Service (PaDIS)
+61 (0)8 9368 3080