Devil's claw - purple-flowered (Proboscidea louisianica)


How does this weed affect you?

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.

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Herbicide options

Users of agricultural or veterinary chemical products must always read the label and any permit, before using the product, and strictly comply with the directions on the label and the conditions of any permit. Users are not absolved from compliance with the directions on the label or the conditions of the permit by reason of any statement made or not made in this information. To view permits or product labels go to the Australian Pesticides and Veterinary Medicines Authority website

See Using herbicides for more information.

2,4-D LV ester 680g/L (Estercide® Xtra)
Rate: 1.15 to 1.7 L/kg per ha
Comments: Boom spray application, before pods form.
Withholding period: 7 days
Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)
Resistance risk: Moderate

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Biosecurity duty

The content provided here is for information purposes only and is taken from the Biosecurity Act 2015 and its subordinate legislation, and the Regional Strategic Weed Management Plans (published by each Local Land Services region in NSW). It describes the state and regional priorities for weeds in New South Wales, Australia.

Area Duty
All of NSW General Biosecurity Duty
All plants are regulated with a general biosecurity duty to prevent, eliminate or minimise any biosecurity risk they may pose. Any person who deals with any plant, who knows (or ought to know) of any biosecurity risk, has a duty to ensure the risk is prevented, eliminated or minimised, so far as is reasonably practicable.

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For technical advice and assistance with identification please contact your local council weeds officer.
For further information call the NSW DPI Biosecurity Helpline on 1800 680 244 or send an email to

Reviewed 2018