Serrated tussock infestations sighted in Ballarat

4 September 2026

Agriculture Victoria has identified several new infestations of serrated tussock (Nassella trichotoma) in Ballarat and surrounding areas.

Leading Biosecurity Officer Josh Howard said when any new infestations are detected it’s important the community stay vigilant and control sightings.

‘Serrated tussock is a declared noxious weed in Victoria and poses a significant threat to western Victoria’s valuable grazing land, as it is highly invasive and unpalatable to stock.

‘It can spread by seed dispersal aided by wind and the movement of vehicles, machinery, livestock, fodder, soil, and clothing.

‘Serrated tussock can significantly reduce the carrying capacity of pastural land.

‘With nearly no nutritional value and high levels of fibre, livestock can lose condition quickly when given no other choice of feed.’

Victorian Serrated Tussock Working Party Chair Lance Jennison said controlling serrated tussock before the plant goes to seed in spring is critical to prevent further spread.

‘Serrated tussock is easily controlled when in low numbers by chipping or spot spraying with registered herbicides and it doesn’t readily grow when using cultivation,’ he said.

Mr Howard said landowners have a legal responsibility to manage declared weeds, so they don’t impact on neighbouring properties or the environment.

‘It’s important that government, community groups, and land managers work together to continue to contain the spread further west.

‘We’re committed to supporting community-led action against noxious weeds and encourage community members to work together to reduce the spread of serrated tussock,’ he said.

For more information about serrated tussock management, visit our weeds page or call 136 186.

Media contact: media@deeca.vic.gov.au