Yellow-flowered devil's claw is a short annual plant with claw-like woody capsules. It injures livestock and competes with summer crops.
Infestations of yellow flowered devil's claw occur in isolated patches, often on roadsides and around stock camps. The leaves have an unpleasant odour and are not eaten by stock. Plants compete with summer crops. The seed pods can injure livestock.
Yellow-flowered devil’s claw is native to America.
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. The yellow trumpet-shaped flowers have purple spots inside the throat. Flowering is in late summer and autumn. The woody seed capsules open into pairs of curved horns (10 centimetres long).
Yellow flowered devil's claw grows in temperate and tropical climates. It prefers fertile soils.
The weed is spread when the clawed seed capsule attaches to livestock, particularly the feet and heads of sheep.
See Using herbicides for more information.
2,4-D LV ester 680g/L
Rate: 1.15 to 1.7 L/kg per ha
Comments: Boom spray application, before pods form.
Withholding period: Do not graze or cut for stock food for 7 days after application.
Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)
Resistance risk: Moderate
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.
|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.