Alphabetical Plant Listing

Iris spuria 'Missouri Rainbows' (Blue Iris)

Blue Iris 'Missouri Rainbows', Spurious Iris 'Missouri Rainbows', Salt Marsh Iris 'Missouri Rainbows', Butterfly Iris 'Missouri Rainbows'


Incredibly eye-catching, Iris spuria 'Missouri Rainbows' is a graceful rhizomatous perennial with attractive beardless flowers with slim, ruffled, lilac falls adorned with large golden signals. Native to central and southern Europe, this iris reaches a height of 40 in. (100 cm) and generally blooms 1 to 2 weeks after the Tall Bearded Irises - providing a striking display in late spring to early summer.

  • Won the Honorable Mention award as well as the Eric Nies Medal (2004)
  • Growing in clumps with handsome narrow linear leaves to 1 ft. long (30 cm), this iris will reward you with beautiful blooms and long-lasting cut flowers.
  • Sets seed easily and will naturalize into large clumps.
  • Attracts bees and butterflies and is usually deer resistant.
  • Performs best in full sun, in richhumusymedium moistureneutral to slightly alkalinewell-drained soils. Partial shade is tolerated, especially in areas that have extremely high temperatures in the summer. However, both flowering performance and disease resistance may be altered. While consistent moisture should be provided during the growing season, wet soils are to be avoided to avoid rot issues. Less moisture is needed after blooming since most spurias are summer dormant (Do not water your spuria irises when dormant as this will cause rot).
  • Drought tolerant once established. Spuria irises are very heavy feeders, so make sure you fertilize them regularly prior to bloom.
  • Makes a great focal point and is a welcomed addition to bedsborderswall-side borderscity gardenscoastal gardenscottage gardens.
  • Should be planted in mid to late summer, about 2 in. deep (5 cm) and 24-36 in. apart (60-90 cm). Space your irises far enough apart to grow in the same location for years as spuria irises resent being transplanted. Spuria irises usually do not bloom the first year after planting. The second year should produce several bloom stalks.
  • Deadhead spent flowers and remove any dying foliage in fall. Old flower stems can be cut down after blooming is over, not only for neatness, but to allow air to reach the rhizomes.
  • Divide plants immediately after flowering when overcrowding occurs (every 3-4 years). Propagate by division of rhizomes from mid summer to early fall
  • May be attacked by slugs, snails and thrips and be subject to grey molds, mustard seed fungus or crown rot.
  • Tips to get your spuria irises to bloom: (1) Don't plant the rhizomes too deep, (2) Provide enough light, (3) Don't over-fertilize (4) Divide your plants when overcrowded.
  • Ingestion may cause severe discomfort

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Requirements

Hardiness 3 – 9
Heat Zones 5 – 9
Climate Zones 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Perennials
Plant Family Iris Spuria - Blue Irises
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early)
Height 3' – 4' (90cm – 120cm)
Spread 2' – 3' (60cm – 90cm)
Spacing 24" – 36" (60cm – 90cm)
Water Needs Average
Maintenance Average
Soil Type Clay, Loam, Sand
Soil pH Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Cut Flowers, Plant of Merit, Showy
Tolerance Deer, Drought
Attracts Butterflies
Garden Uses Beds and Borders, Wall-Side Borders
Garden Styles City and Courtyard, Coastal Garden, Informal and Cottage

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Gap Photos/Christa Brand

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 3 – 9
Heat Zones 5 – 9
Climate Zones 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Perennials
Plant Family Iris Spuria - Blue Irises
Exposure Full Sun, Partial Sun
Season of Interest Spring (Late)
Summer (Early)
Height 3' – 4' (90cm – 120cm)
Spread 2' – 3' (60cm – 90cm)
Spacing 24" – 36" (60cm – 90cm)
Water Needs Average
Maintenance Average
Soil Type Clay, Loam, Sand
Soil pH Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Cut Flowers, Plant of Merit, Showy
Tolerance Deer, Drought
Attracts Butterflies
Garden Uses Beds and Borders, Wall-Side Borders
Garden Styles City and Courtyard, Coastal Garden, Informal and Cottage

Great Plant Combination Ideas with Iris Spuria - Blue Irises

Guides with Iris Spuria - Blue Irises

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