Ludwigia repens is a perennial aquatic plant native to North America. It typically grows in shallow waters, marshes, and along the edges of ponds and lakes. The plant features elongated stems that can reach up to 1 meter in length, with small, oval-shaped leaves that are bright green and can turn reddish under certain conditions. This species is often used in aquariums and water gardens due to its attractive appearance and ability to provide shelter for fish and other aquatic organisms. Ludwigia repens can also help improve water quality by absorbing excess nutrients, making it beneficial for maintaining healthy aquatic ecosystems.