Iris missouriensis (Rocky Mountain iris)

Also called Western blue flag. Native perennial evergreen forb spreading by tuberous rhizomes with showy large pale blue to blue-violet flowers and dark violet veins, blooming May to September. Occurs in wetlands and riparian areas of streambanks, moist meadows and forest openings; up to 11,500 ft. elevation. Use for restoration or in wet to saturated landscaping. Attracts insects and hummingbirds.

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INFORMATION & ATTRIBUTES

Family: Iridaceae

Duration: Perennial

Growth Habit: Forb/herb

Native Status: Native

Growth Form: Colonizing

Mature Height: 12 in.

Bloom Color: Purple

Bloom Period: Spring

Annual Precipitation: 24-35 in.

Drought Tolerance: Low

Shade Tolerance: Intermediate

Elevation:

Wetland Indicator Status: FACW

Fire Resistance: No

Fire Tolerance: High

Nitrogen fixation:

SOIL ADAPTATION

Coarse Texture: Yes

Medium Texture: Yes

Fine Texture: Yes

Salinity Tolerance: None

CaCO3 Tolerance: High

pH Range: 7.0-8.5


SEEDING NOTES

Seeds per Pound: 19,900

Seeding Rate: 2-3 PLS lbs/acre

Season: 

Days to Germination:


VARIETIES & LOCAL ACCESSIONS

None