Japanese Variegated Iris thrives in full sun to partial shade and requires consistently moist soil, making it ideal for water gardens or boggy areas. Ensure the soil is rich and well-draining to support healthy growth. Divide clumps every 3-4 years to maintain vigor and prevent overcrowding. Fertilize in early spring with a balanced fertilizer to promote vibrant blooms. Prune spent flowers to encourage further blooming and maintain a tidy appearance.