Native tree across the Eastern United States and adored for it's timber and flavorful walnuts. Typically grow to 70-80' tall and occasionally reaching 150'. Medicinal uses for the tree come from the bark, the husk, the shell as well as the nut.
Black walnut is considered shade intolerant. Plant in full-sun.
This plant creates the chemical, juglone, known to interfere with the growth of surrounding plants. Many plant species have co-evolved with Black Walnut and are not affected by this chemical. Some companion plants include Hazelnut, Aronia, Elderberry, Raspberries, Blackberries, Mulberry, Grape and grasses. The higher the soil drainage and organic matter, the less of a nuisance juglone becomes (https://newmoonnursery.wordpress.com/2016/01/26/but-nothing-will-grow-there/).
For information on planting, go to http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/growing-black-walnut/