Ignoring ragwort could cost farmers millions

Published on 14 January 2026

One ragwort plant produces 250,000 seeds in late summer and autumn each year so now is the time to spray.

Ragwort is defined as a “regionally controlled” weed in Corangamite Shire, meaning it is widespread, requiring landowners to prevent its growth and spread.

Mayor Kate Makin said the noxious weed is an issue for both agricultural productivity and the environment.

“It’s poisonous to grazing animals, taints milk and chokes out pasture and native vegetation.

“With the importance of dairy in our region, it’s vital to eradicate ragwort before it sets seed.

“Council is doing its bit with twice-yearly spraying of roadsides and Council land, and spot treatment to control isolated plants.

“Most landholders have been working to control ragwort on their properties, and we encourage everyone to play their part.

“It’s bright yellow flowers are out at the moment so it’s easy to spot and get on top of.

“Statewide, weeds and pests cost the Victorian economy over $900 million each year.

“Council and landowners working together to control ragwort and other weeds could save our Shire farmers and economy millions of dollars each year.”

Council’s contractor is currently finishing the first annual round of spraying with a second round to come before the end of summer.

Although ragwort can be treated year-round, it is most notable during late Spring and through Summer when it is in flower, with bright yellow daisy-like flowers.

Recommended measures include spraying, cultivation and physical removal of entire weeds and their roots.

Ragwort seeds can remain in the ground for about seven years, so annual follow-up control will be required.

In its first year, a ragwort seedling grows to form a rosette. In its second year, some plants mature and flower while others may be up to five years old before flowering.

By identifying plants in the rosette stage, landowners can plan where to treat the following year.

In Corangamite Shire, ragwort is most prolific south of Cobden and around Timboon.

Landowners with ragwort on their property are encouraged to seek advice from their local chemical/farm supplier on methods and herbicides fit for their purpose and region.

Agriculture Victoria provides information on weeds and weed control at www.agriculture.vic.gov.au

For more information on our weed control program, please call 5593 7100 or click here.

Landowners and land managers are responsible under the Catchment & Land Protection (CALP) Act 1994 to control ragwort and other state prohibited weeds on their land. Agricultural Victoria is responsible in ensuring they comply.