COMMUNITY NOTICE | GREEN CESTRUM

Published on 06 May 2026

COMMUNITY NOTICE

Cestrum parqui (Green Cestrum)

Green cestrum (Cestrum parqui) has been sighted in several private properties during roadside inspections in the Grenfell town area.

This is a highly toxic invasive shrub that poses serious risks to people, animals, and the environment.

⚠️ Why it’s a problem:

Green cestrum:

• Is poisonous to people, pets, livestock, and native animals
• Can reduce livestock productivity as infested pastures cannot be safely grazed
• Outcompetes native vegetation
• Reduces food and shelter for wildlife

It contains a toxin called carboxyparquin, which can cause severe liver and brain damage. The plant remains toxic even after it has been cut down or sprayed.

Human risk: All parts of the plant, especially the berries, are highly toxic if ingested. Exposure can lead to serious liver poisoning and may be fatal. Avoid handling with bare skin.

Animal risk: Green cestrum can cause sudden death in livestock. Animals may appear healthy and then be found dead within 24 hours, or become sick and die within days.

What landholders need to know:

Under regional recommended management actions:

• Land managers should prevent the introduction of green cestrum to their land
• Prevent spread from affected properties
• Do not buy, sell, move, carry or release the plant into the environment
• Take steps to reduce impacts on high-value environmental, economic, and social assets

�� For further information or assistance, please contact Weddin Shire Council Biosecurity staff on 0458 022 102 or visit WeedWise: weeds.dpi.nsw.gov.au/Weeds/GreenCestrum

                                                                                                                            Image courtesy of the Department of Primary Industries