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Iris missouriensis (Rocky Mountain iris, Wild blue iris)

Iris missouriensis Photo/Illustration: Neil Diboll


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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11
Botanical Name: Iris missouriensis Common Name: Rocky Mountain iris, Wild blue iris Synonyms: Iris tolmeiana Genus: Iris
This variable, beardless iris with narrow leaves to 20 inches long bears 2 to 4 blooms on each branched stem, in summer. The flowers have short, pale to deep blue or lilac-purple standards and larger falls with deep purple veining.
 Care: Grow in medium-wet, average soil.
 Propagation: Lift and divide clumps, or separate bulb offsets, and plant immediately, in early autumn.
 Problems: Iris borer, verbena bud moth, whiteflies, iris weevil, thrips, slugs and snails, aphids, and nematodes.
Height 1 ft. to 3 ft.
Growth Pace Invasive/Aggressive Grower
Light Full Sun to Part Shade
Moisture Medium to Wet
Maintenance Moderate
Characteristics Native; Showy Flowers
Bloom Time Summer
Flower Color Blue Flower; Purple/ Lavender Flower
Uses Beds and Borders, Waterside
Style Water Garden
Seasonal Interest Summer Interest
Type Perennials

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