Onion weed (Asphodelus fistulosus)

Profile

Impact

Onion weed is native from southern Europe to India. Annual or biennial to about 70 cm tall. Leaves are onion-like, although it has no onion smell.

Onion weed produces abundant fertile seeds that can germinate most of the year, and this makes it difficult to control. Hardy weed, ignored by stock. Establishes in disturbed situations, favouring alkaline sandy soils. Now widespread and common from coast to arid inland. Weed of cereal crops and a major threat to arid rangelands.

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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.


Amitrole 250 g/L + Ammonium thiocyanate 220 g/L (Various products)
Rate: 1.1 L per 100 L of water
Comments: Active growth before flowering. Repeat treatments will be required.
Withholding period: Nil
Herbicide group: Q, Bleachers: Inhibitors of carotenoid biosynthesis unknown target
Resistance risk: Moderate


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Legal requirements

Onion weed (Asphodelus fistulosus) is not declared in NSW under the Noxious Weeds Act 1993.

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Reviewed 2014