Plant Rainbow Rhythm® Sound of My Heart Daylily in well-drained soil with full sun exposure. Space plants 18-24 inches apart. Water regularly, especially during dry spells, ensuring soil remains moist but not waterlogged. Fertilize in early spring with a balanced, slow-release fertilizer. Remove spent blooms to encourage reblooming. Divide clumps every 3-4 years in early spring or late summer to maintain vigor.