Are there any irises that can be grown in shade?
Most iris species (bearded, Siberian, Japanese, etc.) perform best when grown in partial to full sun. However, the crested iris (Iris cristata) prefers partial shade. A native of the eastern United States, crested iris produces 4- to 6-inch-long leaves from woody, spindle-shaped rhizomes. Flowers are pale blue to violet with white or yellow crests on their falls. Plants bloom in mid-spring. It is hardy in USDA Hardiness Zones 3 to 8. Because of its small size, crested iris should be grown in the front of perennial beds and borders. It can also be grown as a groundcover in partial shade.