20210427 09203200 1.0 TRUE Annual ragweed Native to North America, annual ragweed is a fast-growing, fern-like plant. Annual ragweed can invade and suppress weak and overgrazed pastures, reducing productivity. Its pollen can cause hay fever and aggravate asthma. © State of Queensland (Department of Agriculture and Fisheries), 2023 weeds pests Map layer extracted from Biosecurity Queensland pest distribution survey displaying distribution of individual invasive weed species.