The Willow Oak (Quercus phellos) is a fast-growing, long-lived deciduous tree, reaching 50–70 feet high, known for its unique, narrow, willow-like leaves and strong adaptability to urban environments. Native to the eastern U.S., this shade tree thrives in zones 5-9, preferring moist, acidic soils but tolerating clay and poor drainage. It is a popular, large,, shade-providing landscape tree.