Walnut trees are deciduous trees belonging to the genus Juglans. They are known for their large, round nuts, which are rich in healthy fats and nutrients. The most common species include the English walnut and the Black walnut. These trees can grow up to 100 feet tall and thrive in well-drained soil and sunny locations. The wood of walnut trees is highly valued for its strength and beautiful grain, making it popular for furniture and cabinetry. Walnut trees typically produce nuts in late summer to early fall, and they require several years of growth before they start bearing fruit.