Amsonia 'Blue Ice' has dark blue buds that open from late spring to early summer. This short, spreading Blue Star blooms considerably longer and stronger than other Amsonia. Blue Ice's dark green leaves turn brilliant yellow in fall. Amsonia 'Blue Ice' is usually late to emerge in spring and spreads by underground rhizomes. This perennial is tolerant of drier soil and clay and prefers full sun and well-drained soil.