20210427 09203400 1.0 TRUE Hygrophila Native to Mexico and Argentina, hygrophila is a flowering, erect herb that grows on creekbanks and in shallow freshwater wetlands. Hygrophila has now naturalised in New South Wales, and is an emerging problem for Queensland's waterways. The main danger is that aggressive hygrophila growth will pose a competitive threat to native water plants. © 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.