Sunfisher Siberian Iris thrives in full sun to partial shade and prefers consistently moist, well-drained soil. Water regularly, especially during dry spells, to maintain soil moisture. Fertilize in early spring with a balanced fertilizer to encourage robust growth and vibrant blooms. Prune spent flowers to promote further blooming and trim foliage back in late fall to prepare for winter. Divide clumps every 3-4 years to prevent overcrowding and ensure healthy growth.