Culture: Best grown in wet, boggy, acidic, sandy soils in full sun. Also does surprisingly well in average garden soils that are kept consistently moist, however best performance in the border will generally occur with sandy-humusy, water-retentive soils that are never allowed to dry out. The species is often found in the wild growing in standing water, and this cultivar may be grown in shallow water (up to 6 “). Tolerates light shade, particularly in the southern part of its growing range. Clumps will slowly spread by creeping rhizomes to form colonies in optimum growing conditions. Divide plants when overcrowding occurs.
Noteworthy Characteristics: Iris virginica, commonly called Southern blue flag, is a wetland species of iris which is native primarily to coastal plains from Virginia to Louisiana. It typically grows to 2′ tall (less frequently to 3′) and features non-fragrant violet-blue flowers with falls that are crested with yellow and white. Flower color can vary considerably from very light blue to purple. Bright medium green, sword-shaped leaves often lie on the ground or in the water. Blooms in late spring.
Genus named for the Greek goddess of the rainbow. Specific epithet means of Virginia.
Problems: No serious insect or disease problems. Optimum growing conditions may be difficult to attain in the home landscape.
Garden Uses: Water gardens, along streams or ponds or in low-lying areas that are subject to periodic flooding. May be grown in borders as long as soils are kept uniformly moist.
All plant information courtesy of the Missouri Botanical Garden
Iris versicolor (Northern Blue Flag) matures to 24-36″ in height and grows best in wet, wet mesic, and mesic soil conditions. Iris versicolor prefers full sun to partial shade and blooms approximately May, June, and July. It has deep blue to purple flowers, the foliage is sword-like, and the flowers are complex and very showy.
Irises may have been used medicinally in the past, but their roots are dangerously poisonous to both humans and livestock. Iris versicolor attracts butterflies and hummingbirds, and it is excellent to use in the garden to add some color to any location! Other common names are Blue Flag Iris, Harlequin Blue Flag, Northern Iris, and Wild Iris.
Price range: $6.00 through $12.00
