Bitou bush control

Page last updated: Wednesday, 18 September 2019 - 3:36pm

Please note: This content may be out of date and is currently under review.

Control methods for bitou bush (Chrysanthemoides monilifera subsp. rotundata), a declared pest in Western Australia.


Inormation about this pest can be found on the bitou bush: 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.

Chemical 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.

Recommended herbicides

  • Metsulfuron
  • Picloram
  • Glyphosate
  • Trounce®

Herbicide: Metsulfuron (Group B) (various trade names: see APVMA link)

Active ingredient

600g/kg metsulfuron methyl

Rate of dilution for spot spraying


Rate of product/10L water


Wetting agent

BS 1000 @ 1:1000 or Pulse @ 1:500

Time of application

When bushes actively growing

Remarks and other control methods

  • spray to thoroughly wet all foliage
  • minimise contact with desirable plants

Herbicide: Picloram (Group I) (various trade names: see APVMA link)

Active ingredient

75g/L picloram + 300g/L 2,4-D

Rate of dilution for spot spraying


Rate of product/10L water


Time of application

Flowering and fruiting

Remarks and other control methods

  • high volume: thorough coverage essential
  • seedlings controlled by 20mL bromoxynil /10L of water. Seedlings and adult plants controlled by 50mL 2,4-D amine/10L of water after cutting
  • glyphosate at 150mL/10L of water is also useful
  • biological control: moth (Comostolopsis germana) released in NSW.

Herbicide: Glyphosate (Group M) (various trade names: see APVMA link)

Active ingredient

  • 360g/L glyphosate
  • 490/500g/L glyphosate
  • 540g/L glyphosate
  • 680g/kg glyphosate

Other concentrations of glyphosate available

Rate of product/10L water

  • 100mL of the 360g/L formulation
  • 70mL of the 490/500g/L formulation
  • 65mL of the 540g/L formulation
  • 50g of the 680g/kg formulation

Adjust rates for another concentrations of glyphosate

Rate of product/ha

Not recommended

Wetting agent dilution

Pulse 20mL/10L

Time of application

Actively growing: best results achieved at peak flowering


  • use half rate on smaller plants: e.g. 50mL of 360g/L formulation or equivalent rate of other formulations
  • do not treat drought stressed plants
  • Roundup® Biactive or Razor® are preferred products in wet areas or near shallow water, as these contain surfactants that are of low toxicity to aquatic animals
  • there are other formulations of glyphosate that are approved for use near aquatic areas: check labels before using

Herbicide: Trounce®

Active ingredient

10g/kg metsulfuron methyl (Group B) + 835g/kg glyphosate (Group M)

Rates of dilution for spot spraying

173g (1 packet)/100L

Wetting agent

1:1000 non-ionic surfactant such as BS-1000

Time of application

Actively growing


  • wet foliage thoroughly
  • minimise contact with desirable species
  • the use of the wetting agent Pulse® @ 20mL/10L water may improve control

Contact information

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