Paterson’s Curse

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How to kill Paterson’s Curse

Access all the information needed for control of this noxious weed, including weed identification, herbicide application and spray timings.

Paterson's Curse Description

Paterson's Curse Identification

Paterson’s curse typically grows to around 60–150 cm in height, often featuring multiple branched stems arising from the plant base. The stems themselves are covered in course hairs, as are the thinner leaves protruding from the stem.

The flowers on Paterson’s curse are predominantly purple, 2–3 cm’s long and shaped like trumpets with two thin stamens protruding from the end of the flower tube.

Paterson's Curse Control

How to kill Paterson’s Curse

For small patches or limited infestations, where labour is not a limiting factor, manual removal of the plant is a highly effective method of control. Vigilant™ II Herbicide can also be used, applied to 50% of the leaves.

For large, well-established infestations it is advisable to use Stinger™ Herbicide at a mix rate of 10g/100L of water with surfactant (an organic compound). Grazon™ Extra Herbicide can also be used at rate of 2.5mL/1L of water with a foliar spray.

Herbicides for killing Paterson’s Curse

Method of application Rate* State
Stinger™ Herbicide Boom application 30 g/ha + surfactant All
Statesman™ 720 Herbicide Boom application 1.475 to 1.95 L/ha ACT, NSW, NT, Old, SA, Tas
Tordon™ 75-D Herbicide Foliar spray 150 mL/ 100 L of water NSW, Old, Vic, WA
Grazon™ Extra Herbicide Foliar spray 250 mL/100 L of water All
Statesman 720 Foliar spray 280 mL/ 100 L of water NT, Old
Stinger Foliar spray 10g/ 100 L of water + surfactant All
Vigilant™ II Herbicide Leafwiping Neat 50% leaf area All

# Note: Preferred product option in bold. * Consult label for details of growth stage and use, especially where range of rates is given.

Treatment Timing

Timing to kill Paterson's Curse

To get the best results, ensure you treat when Paterson’s Curse is actively growing. This will ensure maximum uptake of the chemical into the root system.

PRODUCT Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug
Grazon Extra
Vigilant II
Best time to spray/treat
Can spray/treat
if conditions are suitable
Do not spray/treat