18-24 inches tall.
At maturity the Black Walnut can reach 50-75 feet in height. Starting around the age of 12 years, it yields a nut crop for both human and animal consumption in early to mid-autumn. This tree does well in almost any soil type as long as it is placed in full sun.
The Black Walnut has a beautiful grain that is prized by the woodworking community.
Use caution when planting the Black Walnut near other types of trees and crops as it can be toxic to them. Some examples of plants and trees to keep it clear of are: Pines, apple, cherry, tomatoes, blackberries, lilac, rhododendron, etc.