Bacopa australis was discovered in southern Brazil (australis = southern), and it does not come from Australia, as might otherwise be assumed from its name. Like the other Bacopa species, B. australis is also easy to grow in an aquarium. Under certain conditions it creeps across the bottom to form an elegantly decorative light green cushion. When B. australis grows in a good light, the leaves become reddish. It is easily propagated by taking side shoots and planting them in the substrate.