Salix laevigata, commonly known as the smooth willow, is a species of willow tree native to North America. It typically grows in wetland areas, such as riverbanks and marshes, and can reach heights of up to 30 feet. The tree is characterized by its smooth, grayish bark and narrow, lance-shaped leaves that are green on top and lighter underneath. This species plays an important role in its ecosystem by providing habitat and food for various wildlife. Its roots help stabilize soil and prevent erosion, making it valuable for maintaining healthy waterways. Salix laevigata is also used in traditional medicine and for ornamental purposes in landscaping.