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Please note: This content may be out of date and is currently under review.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

REPORT THE PRESENCE OF THIS DECLARED PEST BEFORE UNDERTAKING CONTROL

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	1g/10L
Rate of product/10L water	1g
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	1:150
Rate of product/10L water	65mL
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
Remarks	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
Remarks	wet foliage thoroughly minimise contact with desirable species the use of the wetting agent Pulse® @ 20mL/10L water may improve control

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Contact information

Pest and Disease Information Service (PaDIS)

+61 (0)8 9368 3080

Email Pest and Disease Information Service (PaDIS)

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