An aquatic emergent, blue flag makes a nice addition to a water garden; excellent for stormwater management and wetland areas.
An emergent aquatic, Iris versicolor has beautiful blue flowers with a yellow throat. Naturally found in wet places such as marshes, and along stream banks, moisture is required for this plant; it would make a good addition to a water garden.
Native Americans used the root of this plant for a variety of medicinal purposes. The root contains a glycoside, iridin, and was used for issues ranging from sprains to detoxification of the blood. Today, it is sometimes used to treat skin conditions.
For more information on this plant, visit the USDA PLANTS Database: http://plants.usda.gov/java/profile?symbol=IRVE2