Shagbark hickory's most prominent ornamental feature is its unique, smoke-gray bark that warps away from the stem in foot-long plates. Shagbark hickory thrives in full sun and rich, well-drained loam. Wild hickories have deep tap roots that make them difficult to transplant. Its savory nuts attract many squirrels and other wildlife. This slow-growing tree may reach a height of 60 to 80 feet, but can grow up to 120 feet in nature.