Appeal: Caesar’s Brother Siberian Iris is known for its dark violet colored flower blooms that open off of tall stalks emerging above the foliage. The foliage resembles grasses having thin, blade like leaves. The beautiful deep violet flowers of Ceasars Brother Siberian Iris will bloom during spring. This perennial is adaptable to different soil types but can thrive in wet areas with poor drainage where other plants would not tolerate wet feet. Siberian Irises look great as a mass planting border or as single accent plants in the landscape.