The Pawnee Pecan tree (Carya illinoinensis 'Pawnee') is a popular, fast-growing deciduous tree, known for producing large, high-quality, thin-shelled nuts early in the season (mid-September to October). Thriving in USDA zones 6-10, these trees reach 30–70 feet in height, require full sun, and need a Type II pollinator (e.g., Kanza, Lakota) for best yields.