| REPORT THE PRESENCE OF THIS PEST BEFORE UNDERTAKING CONTROL |
Information about this pest can be found on the Siam weed: 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 | Triclopyr + picloram |
| Herbicide: Triclopyr + picloram (Group I) (various trade names: see APVMA link) | |
| Active ingredient | 300g/L triclopyr + 100g/L picloram |
| Rates of dilution for spot spraying | 1:300 to 1:200 |
| Amount of product/10L water | 35mL for plants up to 1.5m tall at flowering 50mL for dense stands greater than 1.5m tall at flowering |
| Wetting agent | Non-ionic, e.g. BS-1000 @ 10mL/10L |
| Remarks |
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| More information and other control methods | Fluroxypyr (333g/L) at 20mL/10L water. Imazapyr and glyphosate also being tested in Queensland. |