Pineapple Weed Seeds
$5.95 CAD
Oak Summit Nursery
Rocky Mountain Iris Seeds
Rocky Mountain Iris Seeds
Pack contains: 20+ seeds
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$5.95 CAD
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$5.95 CAD
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Rocky Mountain Iris (Iris missouriensis) is a western North American perennial with slender blue green leaves and pale blue, deep blue, lavender, or purple flowers from late spring into early summer.
The species grows in meadows, streambanks, and open woods. It favours moist soil but tolerates drier conditions once established and spreads gradually by rhizomes.
Cold Hardiness Zone: 3
Stratification Required: 4 months cold
Mature Size: 8 to 20 inches
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Growing details
- Native range
- Western North America; Canadian distribution is recorded in Alberta, British Columbia and Saskatchewan, not Manitoba
- Growing site
- Clay, loam, silt, sand or gravel; associated with riparian and wetland conditions, flooding tolerance and alkaline soil
Cold hardinessZone 3 · Canadian maps for this plant
Zone 3 and warmer
The map shows minimum winter hardiness. Soil, moisture and summer warmth also affect how a plant grows.
About these maps
Climate: Natural Resources Canada, 1991–2020. Provincial distribution: VASCAN via retained botanical research. Province outlines: Natural Earth, public domain.
Open Government Licence – Canada