News Invasive species taking hold 09/02/2022 Facebook Native to North America, parthenium is an annual herb with a deep taproot and an erect stem that becomes woody with age. It invades disturbed bare areas and pastures. Parthenium costs Australia's beef industry $16.5 million per year and cropping industries several million dollars per year. Rockhampton Regional Council is being inundated with reports of Prickly Acacia and Parthenium spreading in the region, and they are […] Subscribe or Login to see the rest of the content. Username Password Remember Me Forgot Password