A walnut tree is of the genus Juglans (Family Juglandaceae), and belongs to any of about 20 species of deciduous trees. These trees are native to North and South America, Europe, Asia, and the West Indies. They are among the most versatile hardwoods on earth. Sculptors and carpenters treasure the timber because of their durability and color. A mature walnut tree can get to 100 feet in height with a 40 foot wide canopy spread. Walnut trees have a long life expectancy and come in a variety of sizes.
These trees require extensive watering and benefit from a thick mulch; younger trees need more water than the older ones. They thrive in deep, moist soil and love full sun. This handsome tree is also prized for providing a great deal of shade and attracting birds, squirrels and deer. The trees have long, large, pleasant smelling leaves with 5 to 23 short-stalked leaflets; leaves remain green and then turn yellow and fall off the tree in the fall. The woody nut is enclosed in a thick husk and provides some of the healthiest nuts on earth. They contain high levels of omega-3 fatty acids, protein, iron and antioxidants.