Plant Rainbow Rhythm® Blood Sweat and Tears Daylily in well-drained soil with full sun exposure. Space plants 18-24 inches apart. Water regularly, especially during dry spells, to keep the soil consistently moist but not waterlogged. Fertilize in early spring with a balanced fertilizer. Remove spent blooms to encourage continuous flowering. Divide clumps every 3-4 years in early spring or late summer to maintain vigor.