Miscellaneous Topics Topics range from soil selection to commercial growing. Links to Documents on Black Walnut Documents concern harvesting, cultivars, and commercial nut production. The only major persian walnut breeding program in the U.S. is located at U.C. Davis. This site has a large amount of information on persian walnuts. Persian Walnut Site at Purdue University Site includes numerous articles and documents on Persian walnuts.
Some topics covered are commercial potential, cultivation and harvesting.