Walnut trees are deciduous trees belonging to the genus Juglans, known for their valuable nuts and hardwood. They can grow up to 100 feet tall and have broad, spreading canopies. The leaves are large and compound, typically consisting of five to nine leaflets. These trees thrive in well-drained soil and prefer sunny locations. Walnut trees produce green, round fruits that contain the edible walnuts inside a hard shell. They are commonly found in temperate regions and are cultivated for both their nuts and timber, which is prized for its rich color and durability.