Ludwigia adscendens, commonly known as Water-Primrose, Floating Primrose-Willow, Creeping Water Primrose, or Red Ludwigia, is a perennial herb found in wetland habitats including marshes, slow-moving streams, ponds, and riverbanks. Its origination is thought to be South America, but it is widely found throughout Asia and Africa. It typically grows to a height and width of 1-2 feet (0.3-0.6 meters). This plant is characterized by its spongy, floating stems and lance-shaped leaves. The yellow flowers, which bloom in the summer and fall, are small but quite showy, with four bright yellow petals that attract pollinators.

Water-Primrose is valued for its rapid growth and ability to cover large areas quickly, making it useful for water gardens and as a floating plant in ponds. It provides habitat for aquatic wildlife and can help reduce algae growth by shading the water. However, its invasive potential should be carefully considered before planting. It thrives in full sun to part shade and prefers wet, boggy conditions, making it suitable for rain gardens and wetland restoration projects. It can grow in a variety of soil types, including clay, loam, and sandy soils, as long as they are consistently moist or even submerged. While it can be a beautiful addition to water features, Ludwigia adscendens can become problematic if it escapes cultivation and spreads into natural waterways, where it can form dense mats that disrupt aquatic ecosystems.CC BY-SA 4.0