Plant Purple Coneflower in well-drained soil with full sun exposure. Space plants 18-24 inches apart. Water regularly during the first growing season to establish a deep root system, then reduce frequency. Fertilize in early spring with a balanced fertilizer. Deadhead spent blooms to encourage more flowers. Cut back stems in late fall or early spring to promote new growth. Divide clumps every 3-4 years to maintain vigor.