20210427 09203300 1.0 TRUE Calotrope Native to tropical Africa and Asia, calotrope is a spreading shrub or small tree with white-and-purple flowers. Calotrope was introduced into Australia as an ornamental shrub. Calotrope can readily become established in areas disturbed by vegetation clearing, road-making or heavy grazing. © State of Queensland (Department of Agriculture and Fisheries), 2023 Map layer extracted from Biosecurity Queensland pest distribution survey displaying distribution of individual invasive weed species.