Quercus phellos, or willow oak, is a medium to large deciduous tree native to the Southeastern U.S. This fast-growing tree thrives in full sun and prefers moist, well-drained soils but is adaptable to a variety of conditions, including clay and wet soils. Willow oak is tolerant of urban pollution, making it a great choice for streets, parks, and large lawns. Notable cultivars include Hightower, which has a dense, uniform form, and Upperton, known for its narrow habit. These cultivars are ideal for various landscaping applications, including rain gardens and floodplains. Prune in the dormant season to prevent attracting beetles that may spread oak wilt. Quercus phellos drops a moderate number of leaves and small acorns, with the heaviest shedding in the fall.