Blue Sapphire Iris (Iris sibirica) produces striking blue flowers on strong, narrow stems. Siberian Iris flowers give the illusion of almost floating over the foliage. These hardy Iris plants are low-maintenance and thrive in well-drained soil. Siberian Iris varieties are known for their resilience and adaptability to various growing conditions, making them a popular choice for gardeners who want beautiful blooms with minimal effort.