Cortaderia selloana is a robust large tussocky perennial grass with white or pink feathery flowers in late summer. As seeds fall, flowers appear white. Seeds are spread by wind, machinery and dumping of garden refuse. Pampas grass invades open, sunny areas which have adequate moisture. It is found along stream banks, roadsides and waste places and in native vegetation.
Manual control
Can be dug out if small.
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
Plants can be sprayed with Round Up. Can be burnt or slashed and regrowth sprayed. 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These notes are from 2017, and some information, particularly herbicide information, may be out of date.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).