Native to Mexico and Central America, crofton weed was introduced to Australia in 1875 as an ornamental plant but then spread out of control. Newly-cleared land along the New South Wales and Queensland borders was overrun in the 1940s.
Crofton weed is most prevalent in South East Queensland, invading pastures and colonising roadsides and forest edges. Crofton weed is an aggressive weed which is poisonous to horses, causing serious respiratory damage that can cause death.
Crofton weed in not a declared pest plant under Queensland legislation.
|Scientific name||Ageratina adenophora|
The best form of weed control is prevention. Treat weed infestations when they are small - do not allow weeds to establish.
See the crofton weed fact sheet (PDF, 215KB) for herbicide control and application rates.