Hostas have ribbed leaves borne in a cluster at the base of the plant; the leaves are generally large but range in size from 1.2 to 45 cm (0.5 to 18 inches) long and 1.2 to 30 cm (0.5 to 12 inches) wide. The tubular white or bluish purple flowers are borne in clusters at the tip of stalks that emerge from the leaves.