Numerous varieties of Siberian irises are available. They are available in shades of blue, purple, wine-red, pink, white, and yellow. Their flowers are borne atop tall stems in late May or June. The green foliage often turns to an attractive yellow or orange-brown in the fall. Siberian iris varieties range in height from 12 to 40 inches.
Siberian irises perform best in moist, well-drained, fertile soils.
However, they will tolerate poor, dry sites. They can be grown in partial shade to full sun. Siberian irises are usually planted in spring or late summer. However, container grown material can be planted any time during the growing season. Space plants about 18 to 24 inches apart.