Blue Flag Root

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Blue Flag Root

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


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


Blue flag, an herbaceous perennial of the ridaceae family, resembles a common garden iris and is often confused with Sweet Flag, which is another plant in another genus.

Blue Flag Root is a marginal aquatic plant that forms a clump of narrow, arching-to-erect, sword-shaped, blue-green leaves (to 24″ long and 1″ wide). Flowering stalks rise from the clump to 30″ tall in late spring, typically producing 3-5 violet-blue flowers per stalk. Flowers have white and yellow markings at the sepal bases. Clumps spread slowly and naturalize by tough, creeping rhizomes.

common names & nomenclature 
In Greek mythology Iris—Greek for “rainbow”—was the goddess of the rainbow and messenger of the gods. While versicolor, which means “having many colors” is in allusion to the prismatic colors of the species.

Also known as:
flag-lily, fleur-de-lis, flower-de-luce, iris, liver lily, wild iris, poison flag, flag lily, snake lily, dragon flower, dagger flower, water flag, harlequin blueflag, larger blue flag, northern blue flag

Blue Flag Root 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.


Dried Root (rhizome) or fresh root for poultices


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.
Blue Flag Root

1oz, 4oz, 8oz, 1lb

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