Lesser-Known Hickory Tree Facts
Every whiff of hickory-scented meat rising from a backyard barbecue grill pays homage to one of America's iconic trees. A dozen of the world's 18 hickory tree (Carya spp.) species call the U.S. their home. They rule alongside oaks (Quercus spp.) in the eastern hardwood forests of USDA plant hardiness zones 4 through 9. We drill down on some lesser-known hickory tree facts.