The black walnut tree (Juglans nigra) is a large deciduous tree native to North America. It can grow up to 100 feet tall and is known for its dark, ridged bark and large, compound leaves. The tree produces round, green fruit that contains a hard-shelled nut, which is highly valued for its rich flavor and nutritional benefits. Black walnut trees thrive in well-drained soils and prefer sunny locations. They are often found in forests and along riverbanks. The wood of the black walnut is prized for its strength and beautiful grain, making it a popular choice for furniture and cabinetry.