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Blue Flag Root

  • Iris versicolor
  • Origin: USA
Blue Flag Root


Common Name

Standardized: blue flag
Other: larger blue flag, southern blue flag

Botanical Name

Iris versicolor L. and Iris virginica L.
Plant Family: Iridaceae



Blue flag is a perennial herb native to North America, and cultivated elsewhere in the world. It grows in shallow water, at the edge of ponds, marshes and swamps and is similar in appearance to other wild iris, and is sometimes mistaken for them.


Iridin, also called iridin, volatile oils, salicylic and isophthalic acids, gum, resin, tannin and sterols

Parts Used

Dried Root (rhizome) or fresh root for poultices

Typical Preparations

In teas, extracts and rarely capsules. Used for poultices.


Specific: Not for use in pregnancy except under the supervision of a qualified healthcare practitioner.
General: We recommend that you consult with a qualified healthcare practitioner before using herbal products, particularly if you are pregnant, nursing, or on any medications.

For educational purposes only This information has not been evaluated by the Food and Drug Administration.
This information is not intended to diagnose, treat, cure, or prevent any disease.