Iris missouriensis

January 6, 2026
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Iris missouriensis

Rocky Mountain Iris

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Description

Habitat plains-montane, moist to wet meadows, allegedly deer proof.
Soil sandy-clayey Sun full sun
Annual Precipitation 24+ inches USDA Zones 3-5
Bloom Period May-June Life Span perennial
Height 12-24 inches Width 4-12 inches
Seeds per lb 21,000 Lbs per acre 80

Germination Information  120-180 days cool moist stratification or plant outside in the fall in moist soil to 1/4 inch deep.

 

USDA Plant Guide (pdf)

 

Geographic Range

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