Siberian Iris (Iris Sibirca) are a most outstanding, maintenance-free species of plants. These graceful, but rugged plants bloom in late spring and maintain their beautiful grass-like foliage all season. After bloom, the mature seed pod and stem are excellent in dried arrangements. They prefer sun to part shade in evenly moist acidic soil. Not enough good can be said about Siberian Iris. They are rugged, vigorous, smothered with bloom. Not fussy about soil, they take a wide range of conditions, quickly forming large clumps. Resistant to iris bores and drought tolerant once established. Give them plenty of water until established. They love mulch, just like daylilies. This very hardy iris grows in zones 3-9.