Iris missouriensis – Rocky Mountain Iris, Western Blue Flag, Missouri Flag

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Western blue flag is a perennial herb, usually evergreen and growing from a creeping,  tuberous rhizome.  The beautiful and variable blossoms lend themselves to landscaping, where they naturalize and require minimal maintenance. Native irises are free flowering, most are long lived, require very little attention, and provide an abundance of seeds. Iris flowers attract both insects and hummingbirds.

Invasive Potential:  Western blue flag is considered a noxious weed in pastures, because leaves are unpalatable and bitter.

Iris missouriensis
– Rocky Mountain Iris, Western Blue Flag, Missouri Flag

NRCS Plant Profile

Sizes & Availability

L – Large Plug, 9″ deep, 520ml
XL – Deep Tru Qt, 4x4x9.5, 1540ml

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