Iris graeberiana | Also known as: Sword Lily, Iris | Rating: 0 votes | Print / Pdf

Enjoys flaunting its superb lavender coloured flowers and sticking its tongues out.

As genera of the Iris go, Iris graeberiana boasts a couple of subtle but impressive differences. For example, its foliage is glossy, mid-green and lance-shaped, but the leaves have a grey colouring on the underside and white margins along its front. The magnificent pale lavender flowers, complete with yellow falls, have dark veins to accentuate the texture of the delicate petals. A popular cottage garden plant, Iris graeberiana thrives in moist but well-drained soil, while its hardiness means it requires less maintenance than some of other species. Still, planting in a sheltered area with access to full sun is recommended.

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Known dangers?
  • yes
Dangers: comments
  • Avoid eating this plant, or you may have severe stomach upset. Its sap may irritate your skin.
Height [m]
  • 0.2 - 0.4
Spread [m]
  • 0.08
Dominant flower colour
  • Blue
Flower Fragrance
  • No, neutral please
Flowering seasons
  • Early spring
Foliage in spring
  • Green
Foliage in summer
  • Green
Propagation methods
  • seed
  • offsets
Growth habit
  • Clump-forming
  • Erect
  • Acidic
  • Neutral
  • Alkaline
Hardiness zone
  • Z6-9
Heat zone
  • H9-6
Winter temperatures [°C]
  • -23 - -1
Heat days
  • 45 - 150
  • well-drained
Soil type
  • sandy
  • Clay
  • chalky
  • loams
Sun requirements
  • Full sun
  • Exposed
  • Sheltered
Standard category
  • Flowers & bulbs
  • Perennials
Grown for
  • Attractive Flowers
Creative category
  • For Beginners
  • Colours
  • Show-offs
  • Roses & classics
Garden type
  • Cottage garden
  • Rock garden
  • Gravel garden
Garden spaces
  • Flower beds
  • Borders
Gardening expertise
  • beginner
Time to reach full size
  • 2 to 5 years