Willow trees (Salix spp.) are graceful, fast-growing deciduous trees known for their elegant, sweeping branches and adaptability to a variety of landscapes. Ideal for USDA Hardiness Zones 4–9, willows thrive in full sun to partial shade and prefer moist, well-drained soils, making them perfect for planting near water features, wetlands, and large open spaces. Willows are excellent for erosion control and provide valuable habitat for wildlife.