The cultivar Flight of Butterflies has small, dark blue flowers with white patterns on the falls. The stems stand 30 to 36 inches high with 3 or more blooms on each stem in early summer. The thin, grass-like foliage remains a highlight throughout the summer. Siberian irises lack the beard of colored hairs at the base of each fall that other iris groups have. Typically these irises grow together in thick clumps which keep out weeds. The name iris was taken from the Greek goddess of the rainbow to symbolize the many colors of this flower. The classic Fleur de Lys, which has been a symbol of royalty throughout history, was an adaptation of the iris flower.