Self-seeding, native perennial
Many purple coneflowers bloom every year in one of our neighbor's pastures. I always enjoy seeing them. The USDA Plants database says that coneflowers grow "in rocky prairie sites in open, wooded regions." That's a nearly perfect description of the growing site of these flowers. This pasture has thin soil with some rock outcroppings, and the redcedars are doing their best to take over.