20210427 09203400 1.0 TRUE Harrisia cactus Native to South America, harrisia cactus is a spiny perennial plant. Harrisia cactus was introduced to Queensland as a pot plant in the 1890s and is now found in a number of sites across the state. It can infest pastures and reduce them to a level unsuitable for stock. All other Harrisia species are prohibited and sightings must be reported to Biosecurity Queensland within 24 hours. © 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.