Potamogeton tricarinatus, commonly known as Floating Pondweed, is a deciduous perennial aquatic herb native to freshwater habitats such as ponds, lakes, slow-moving streams, and marshes in Australia. It typically has a height and spread of up to 0.3 feet (0.09 meters), with leaves that float on the water’s surface or are submerged. The plant produces small, inconspicuous greenish flowers during the summer months, which are followed by tiny, beaked fruits that are not particularly ornamental.

Floating Pondweed is valued for its role in aquatic ecosystems, providing oxygenation and habitat for aquatic wildlife. It is used in water gardens, ponds, and managed wetland areas for its ecological benefits and its ability to help maintain water clarity by competing with algae. It requires an aquatic environment to thrive, with full sun to part shade conditions. While it is generally low-maintenance, care should be taken to manage its growth as it can become invasive in some conditions, potentially outcompeting native species.CC BY-SA 4.0