All parts of the plant are poisonous to humans and animals if eaten. The sap can cause skin irritation.
Photos from SGLN’s 2017 weed guide
About Arum Lily
Zantedeschia aethiopica is poisonous to stock and humans, likes to grow along waterways and wetland edges. It is able to form large spreading clumps that choke out indigenous plants.
It is an evergreen and will grow to 1.5m tall with a tubular type white flower. Spreads by rhizome, water, birds foxes and livestock and dumped garden waste.
Manual control
Can be dug out, but all bulb matter should be removed.
From SGLN’s 2017 weed guide.
Herbicides must be applied at the appropriate rate as specified on the label and all safety precautions followed. If chemical control is necessary near drainage lines or streams, use extreme caution as the effects on aquatic life can be devastating even in minute amounts. Always seek expert advice.
Chemical control notes from SGLN’s 2017 weed guide
Cut and paint with Vigilant Gel. Always check the herbicide label before use.
These notes are from 2017, and some information, particularly herbicide information, may be out of date. Please ask local suppliers and do your own research in selecting herbicides if choosing chemical control.
Family, origin, type, plant instead, control methods and the note above are from SGLN’s pocket guide Common weeds of South Gippsland (2026).