Tiger pear (Opuntia aurantiaca)

Also known as: prickly pear

Profile

Impact

Tiger pear is native to Uruguay and Argentina. Regarded now as the most troublesome of all cactus species in NSW and the worst Opuntia species in Qld. Probably introduced in late 1800's, has expanded to infest large parts of southern Qld and northern NSW, inland from the Great Dividing Range. Segments break from plants easily and are transported by water, stock and to a lesser extent by tyres. Extremely hardy, thriving in a range of habitats in the slopes and nearby plains, where large localised infestations still thrive.

Description

Tiger pear is a spreading or climbing cactus rarely more than 40 cm high.  The plant consists of numerous segments to 20cm long. Each segment has large spines to 5 cm long. Flowers are yellow. Fruit egg-shaped with depressed top, 2.5–3.5 cm long, red to purple when ripe. Plant forms seeds but is a sterile hybrid and only spreads vegetatively by segments or fruit which root where they contact the ground.

Other publications

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Control

Widespread infestations are controlled biologically using cochineal, Dactylopius austrinus. Small isolated infestations can be controlled chemically.

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.


PERMIT 14442 Expires 30/06/2018
Picloram 100 g/L + Triclopyr 300 g/L + Aminopyralid 8 g/L (Grazon Extra®)
Rate: 500 mL in 100 L of water
Comments: Apply as a thorough foliar spray
Withholding period: Where product is used to control woody weeds in pastures there is a restriction of 12 weeks for use of treated pastures for making hay and silage; using hay or other plant material for compost, mulch or mushroom substrate; or using animal waste from animals grazing on treated pastures for compost, mulching, or spreading on pasture/crops.
Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)
Resistance risk: Moderate


PERMIT 14442 Expires 30/06/2018
Triclopyr 300 g/L + Picloram 100 g/L (Grazon® DS)
Rate: 500 mL per 100 L of water
Comments: Apply as a thorough foliar spray
Withholding period: Nil.
Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)
Resistance risk: Moderate


Triclopyr 240 g/L + Picloram 120 g/L (Access™ )
Rate: 1.0 L per 60 L of diesel
Comments: Apply thoroughly as a foliar spray.
Withholding period: Nil
Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)
Resistance risk: Moderate


Triclopyr 600 g/L (Garlon® 600)
Rate: 3.0 L per 100 L of water
Comments: Apply thoroughly as a foliar spray.
Withholding period: Nil.
Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)
Resistance risk: Moderate


Triclopyr 600 g/L (Garlon® 600)
Rate: 1.0 L per 75 L of distillate
Comments: Apply thoroughly as a foliar spray.
Withholding period: Nil.
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.
All of NSW Mandatory Measure
Must not be imported into the State or sold
Central Tablelands Regional Recommended Measure*
Land managers should mitigate the risk of new weeds being introduced to their land. Land managers should mitigate spread from their land.
Protect unimproved grazing lands that are free of tiger pear
Central West Regional Recommended Measure*
Whole region: Land managers should mitigate the risk of new weeds being introduced to their land. Core infestations: Land managers should mitigate spread from their land.
*This Regional Recommended Measure applies to all species of Opuntia except for Opuntia ficus-indica (Indian fig)
Hunter Regional Recommended Measure*
Land managers should mitigate the risk of new weeds being introduced to their land. Land managers should mitigate spread from their land.
North West Regional Recommended Measure*
Land managers should mitigate the risk of new weeds being introduced to their land. Land managers should mitigate spread from their land.
South East
Core infestation area: whole region except the exclusion zone of Wollongong, Kiama, Shellharbour, and Eurobadalla
Regional Recommended Measure
Whole region: Land managers should mitigate the risk of new weeds being introduced to their land. Exclusion zone: The plant should be eradicated from the land and the land kept free of the plant. Core infestation: Land managers should mitigate spread from their land.
*This Regional Recommended Measure applies to all species of Opuntia except for Opuntia ficus-indica (Indian fig)
Western
Grazing, conservation and urban areas
Regional Recommended Measure*
Land managers should mitigate the risk of new weeds being introduced to their land. Land managers should mitigate spread from their land.
*To see the Regional Strategic Weeds Management Plans containing demonstrated outcomes that fulfill the general biosecurity duty for this weed click here

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For technical advice and assistance with identification please contact your local council weeds officer.
For further information call the NSW Invasive Plants and Animals Enquiry Line on 1800 680 244 or send an email to weeds@dpi.nsw.gov.au

Reviewed 2017