Prickly Problems: Managing an Invasive Cactus
Originally introduced as an ornamental plant, Cylindropuntia imbricata commonly known as Devil’s Rope has taken a less than welcome role in Australia’s rangelands. Tough, spiny, and impressively persistent. It spreads, it sticks, and it refuses to leave. Now recognised as a serious biosecurity threat.
Capacity building - LEP23-021-23
The issue
Devil’s Rope has quietly become a very uncooperative guest in Australia’s rangelands. Originally brought in as an ornamental cactus (good intentions, questionable outcomes), it now spreads rapidly through seeds and stem fragments that hitch rides on animals, machinery and even people. Once established, it forms dense infestations that block access to land, injure livestock and outcompete native plants. Its sharp spines make it memorable for all the wrong reasons, while its ability to survive harsh conditions makes control difficult, expensive and ongoing. Managing its spread is essential to protect agriculture, biodiversity and the safety of rural communities.
The solution
Managing Cylindropuntia imbricata takes a practical, on-the-ground approach and a fair bit of patience. Infestations are identified early and treated quickly to stop further spread. Using appropriate protective equipment, plants are carefully removed and disposed of to avoid re-establishment from fragments. Targeted chemical and biological control methods are applied where suitable to support long-term suppression. Community awareness also plays a key role, helping people recognise the cactus and report new outbreaks before they escalate. With consistent effort and timely action, infestations can be reduced and the risk of spread significantly contained across vulnerable landscapes.
The impact
Control efforts for Devil’s Rope are helping to slow its spread and protect grazing land, native ecosystems and agricultural productivity across affected regions. The use of cochineal in the northwestern corner of the state has had an impressive impact on a large infestation. Early intervention remains the most effective strategy, reducing long-term costs and preventing widespread environmental damage. However, this cactus is not one to give up easily, so ongoing monitoring and reporting are essential to keep it in check. Continued vigilance ensures new outbreaks are caught early before they become major infestations. If detected, sightings should be reported to your local council weeds officer. Use the NSW WeedWise app or contact NSW DPI for identification and reporting support.
Images used are by John Husking NSW DPI from the Weedwise app
Key facts
- Introduced to Australia as an ornamental plant (now a regretful one)
- Spreads via seeds and broken stem segments that travel easily
- It is a biosecurity offence to sell, trade or swap in NSW
- Can injure livestock, wildlife and people due to sharp spines
- Listed as a biosecurity risk across multiple Australian states