SEARCH Articles Figures Tables Black walnut Black walnut European alder Black walnut autumn-olive Black walnut juglone Black walnut nitrogen-fixing plants Black walnut soil nitrogen English walnut Fatty acid in walnut oil Foods: Walnuts Fossil walnut stones Japanese walnut Juglone from black walnut Persian walnuts Walnut Creek, California Walnut Family Walnut bark Walnut clusters Walnut juglone Walnut leaves Walnut oil Walnut shell flour Walnut shells Walnut trees Walnut, chemical composition Walnuts (Juglans spp