Iris missouriensis
Missouri flag, Iris montana, Iris tolmeiana, Western blue flag, Rocky Mountain iris, Wild iris, Wild blue iris
Iris Iris
I. missouriensis - I. missouriensis is a variable, spreading, rhizomatous, deciduous perennial with strap-shaped, erect to arching, dark blue-green leaves and, in summer, slender, branched stems bearing flowers with short, blue to lavender standards and paler falls with dark purple veins.
Iris missouriensis is: Deciduous
Erect flower stem, Clump-forming, Arching
Ingestion may cause severe discomfort.
Veined, Blue, Lavender in Summer
Blue-green in Spring; Blue-green in Summer
Snails , Slugs , Thrips Snails , Slugs , Thrips
Grey mould Grey mould
Remove faded or dead foliage in autumn. Cut back spent flower stems.
Division
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Iris missouriensis (Missouri flag) will reach a height of 0.5m and a spread of 0.3m after 2-5 years.
Beds and borders, City, Coastal, Cottage/Informal, Flower Arranging, Wallside and trellises, Waterside
Grow in fertile, well-drained, acid to neutral soil in full sun or partial shade. Tolerates slightly alkaline conditions. Plant in spring.
Loamy
Well-drained
Acid, Neutral
Partial Shade, Full Sun
South, East, West
Exposed, Sheltered
Hardy (H4)
We do not currently have companion plants added for this plant.
Iris missouriensis
Missouri flag, Iris montana, Iris tolmeiana, Western blue flag, Rocky Mountain iris, Wild iris, Wild blue iris
Iris Iris
I. missouriensis - I. missouriensis is a variable, spreading, rhizomatous, deciduous perennial with strap-shaped, erect to arching, dark blue-green leaves and, in summer, slender, branched stems bearing flowers with short, blue to lavender standards and paler falls with dark purple veins.
Deciduous
Erect flower stem, Clump-forming, Arching
Ingestion may cause severe discomfort.
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Veined, Blue, Lavender in Summer
Blue-green in Spring; Blue-green in Summer
Remove faded or dead foliage in autumn. Cut back spent flower stems.
Division
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Iris missouriensis (Missouri flag) will reach a height of 0.5m and a spread of 0.3m after 2-5 years.
Beds and borders, City, Coastal, Cottage/Informal, Flower Arranging, Wallside and trellises, Waterside
Grow in fertile, well-drained, acid to neutral soil in full sun or partial shade. Tolerates slightly alkaline conditions. Plant in spring.
Loamy
Well-drained
Acid, Neutral
Partial Shade, Full Sun
South, East, West
Exposed, Sheltered
Hardy (H4)
Zone 8, Zone 7, Zone 6, Zone 5, Zone 4, Zone 3
Iris missouriensis (Missouri flag)
Red rice root aphid; Rice root aphid
Rhopalosiphum rufiabdominalis
Insect
Absent
3
3
Potentially significant glasshouse pest; growers should monitor for its presence. Routine aphid control should be effective in mitigating risk.
Iris missouriensis (Missouri flag)
common blossom thrips; cotton bud thrips; tomato thrips
Frankliniella schultzei
Insect
Absent
2
3
Polyphagous glasshouse pest; present in many countries; single finding in UK.
Our plants are under greater threat than ever before. There is increasing movement of plants and other material traded from an increasing variety of sources. This increases the chances of exotic pests arriving with imported goods and travellers, as well as by natural means. Shoot is working with Defra to help members to do their part in preventing the introduction and spread of invasive risks.
Traveling or importing plants? Please read "Don't risk it" advice here
Suspected outbreak? Click here for contact details to report to the relevant authority.
Date updated: 7th March 2019 For more information visit: https://planthealthportal.defra.gov.uk/
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This plant likes... | Garden match | |
Soil types: | Loamy | Tell us... |
Soil drainage: | Well-drained | Tell us... |
Soil pH: | Acid, Neutral | Tell us... |
Light: | Partial Shade, Full Sun | Tell us... |
Aspect: | South, East, West | Tell us... |
Exposure: | Exposed, Sheltered | Tell us... |
Hardiness: | Hardy (H4) | Tell us... |
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