Report the presence of this pest before undertaking control
Information about this pest can be found on the creeping knapweed: declared pest page.
Login or set up a new account on DAFWAs online training site to access:
- a training course on how to identify creeping knapweed and report it.
- training material that you can use to teach community groups how to identify creeping knapweed.
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 creeping knapweed: what you should know page.
Chemical control options
Recommended herbicides | Clopyralid; Amitrole; Picloram + 2,4-D |
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Herbicide: Clopyralid (Group I) (various trade names: see APVMA link) | |
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Active ingredient | 300g clopyralid as the tri-isopropanolamine salt Also a 750g/kg formulation available |
Rate of product/ha | 4L/ha |
Time of application | September – April on actively growing plants |
Wetting agent | Add at recommended rate as per label |
Remarks and more information |
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Herbicide: Clopyralid (Group I) (various trade names: see APVMA link) | |
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Active ingredient | 750g/kg clopyralid potassium salt |
Rate of product/ha | 1.6kg |
Time of application | September – April on actively growing plants |
Wetting agent | Add at recommended rate as per label |
Remarks and other control measures |
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Herbicide: Amitrole T, Weedeath (Group F) | |
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Active ingredient | 250g/L amitrole + 220g/L ammonium thiocyanate |
Rate of product | 1.1L/100L water |
Wetting agent | Add recommended product @ 55mL/15L water for knapsack spraying |
Time of application | When plants are actively growing, just prior to flowering |
Remarks | Respraying will be necessary |
Herbicide: Picloram (Group I) (various trade names: see APVMA link) | |
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Active ingredient | 300g/L 2,4-D and 75g/L picloram present as tri isopropanolamine salts |
Rate of product/ha | 7.5L |
Time of application | During late spring to summer |
Remarks and other control measures |
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