Cotton thistle is subject to a Sustained Control programme as part of the Regional Pest Management Plan 2018. It has a limited distribution and density and the long term goal is to ensure the infestations are maintained at very low levels.
Marlborough District Council will carry out all the control work required for this pest at no cost to the landowner. Sites are visited by biosecurity staff at regular intervals to ensure all infestations are controlled before they seed, ensuring the infestations are maintained at very low levels.
Should you see this plant please report it immediately to the Marlborough District Council who will arrange for its control.