Horsetail control

Page last updated: Thursday, 2 January 2020 - 8:10am

Please note: This content may be out of date and is currently under review.

Control methods for horsetail (Equisetum species) a declared pest in Western Australia.


Information about this pest can be found on the horsetail: declared pest page.

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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


Herbicide: Casoron G (Group K)

Active ingredient

67.5g/kg dichlobenil

Rate of product


Time of application

Preferably when plants are dormant — usually in colder months

Wetting agent



This a spot treatment only

More information

  • Spread the granules evenly over the surface. A good method to aid the even distribution is to mix the granules in dry sand and then sprinkle over the area to be treated. Water treat the area immediately after application of the granules.
  • Repeated applications will be necessary.

Other control measures

Excavation and removal of soil and plant material, but this can be expensive and involves the risk of spreading the plant fragments.

Contact information

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