Iris sibirica 'Esther C.D.M', commonly known as Siberian Iris, is a charming herbaceous perennial prized for its delicate white blooms. This clump-forming plant is known for its graceful, arching foliage and elegant flowers, making it a stunning addition to any garden. It thrives in hardiness zones 3 through 9, preferring full sun to partial shade. The Siberian Iris is not only hardy but also cold-tolerant, thriving in temperatures ranging from -40°F to 90°F. It reaches a mature height of 28 to 36 inches, offering vertical interest in borders or massed plantings. While not fully deer-resistant, its tough leaves tend to be less appealing to deer compared to other plants. 'Esther C.D.M' is a resilient choice for those looking to add elegance and a touch of simplicity to their landscapes.