Plant Red Flame Red Switchgrass in full sun and well-drained soil. Space plants 2-3 feet apart. Water regularly during the first growing season to establish roots. Once established, it is drought-tolerant. Fertilize in early spring with a balanced fertilizer. Cut back old foliage to the ground in late winter or early spring before new growth appears. Divide clumps every 3-4 years in early spring to maintain vigor.