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