Purple-flowered devil’s claw is an annual plant growing up to 50 centimetres high with large rounded or heart-shaped leaves and trumpet-shaped, creamy-white to mauve or purple flowers with dark purple and orange markings. Purple-flowered devil’s claw has distinctive woody seed capsules that split to form two long curved claws (up to 30 centimetres).
This plant is known to infest pastures reducing carrying capacities. The woody seed capsules cause injury to stock, and may restrict feeding if lodged on the face, leading to eventual death from starvation. The capsules also attach to hooves causing lameness, and to wool reducing quality.
Purple-flowered devil’s claw is native to America.
See Using herbicides for more information.
2,4-D LV ester 680g/L
Rate: 1.15 to 1.7 L/kg
Comments: Boom spray application, before pods form.
Withholding period: 7 days
Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)
Resistance risk: Moderate
Devil's claw - purple-flowered (Proboscidea louisianica) is not declared in NSW under the Noxious Weeds Act 1993.