Devil's claw - yellow-flowered (Ibicella lutea)

Profile

Impact

Yellow-flowered devil’s claw is a low-growing annual plant to 50 centimetres high and spreading to 1.5 metres wide. It has large round or kidney-shaped leaves and yellow trumpet-shaped flowers with purple spots inside the throat. The woody seed capsules open into pairs of curved horns (10 centimetres long). The weed is spread when the clawed seed capsule attaches to livestock, particularly the feet and heads of sheep (consequently causing injuries).

Infestations occur in isolated patches, often on roadsides and around stock camps. The leaves have an unpleasant odour and are not eaten by stock. Plants will compete with summer crops.

Yellow-flowered devil’s claw is native to America.

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Control

Herbicide options

WARNING - ALWAYS READ THE LABEL
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 www.apvma.gov.au

See Using herbicides for more information.


2,4-D LV ester 680g/L (Estercide® Xtra)
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


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Legal requirements

Devil's claw - yellow-flowered (Ibicella lutea) is not declared under the Noxious Weeds Act 1993 (NSW).

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Devil's claw (yellow-flowered)
Devil's claw (yellow-flowered) (Photo: Bob Trounce)