Algerian iris

Iris unguicularis | Also known as: Iris stylosa, Sword Lily, Iris, flag | Rating: 0 votes | Print / Pdf

Algerian iris, late bloomers hardly ever look this good

Iris unguicularis is a clump forming herbaceous perennial. Commonly called Algerian iris, i. unguicularis flowers during late winter and produces fragrant deep violet blooms. These contrast beautifully with the specimen’s many dark green leaves. Algerian iris should be planted in full sun and given well-drained soil. It dislikes too much moisture, and sand can be added to compost to improve drainage. I. unguicularis is ideally planted at the base of a sunny wall. It can also be used in herbaceous borders needing some winter colour, or in well-drained containers.

Rate it:
Known dangers?
  • yes
Dangers: comments
  • Avoid eating this plant, or you may have severe stomach upset. Its sap may irritate your skin.
Height [m]
  • 0.3
Spread [m]
  • 0.2
Dominant flower colour
  • Purple
Flower Fragrance
  • Yes, let it smell
Flowering seasons
  • Late winter
  • Early spring
Foliage in spring
  • Green
Foliage in summer
  • Green
Foliage in Autumn
  • Green
Foliage in winter
  • Green
Propagation methods
  • seed
  • division
Growth habit
  • Compact
  • Erect
  • Neutral
  • Alkaline
Hardiness zone
  • Z7-9
Heat zone
  • H9-7
Winter temperatures [°C]
  • -18 - -1
Heat days
  • 60 - 150
  • well-drained
Soil type
  • sandy
  • chalky
  • loams
Sun requirements
  • Full sun
  • Exposed
  • Sheltered
Standard category
  • Flowers & bulbs
  • Perennials
Grown for
  • Attractive Flowers
Creative category
  • Fine fragrants
  • For Beginners
  • Colours
  • Show-offs
  • For birds & bees
  • Roses & classics
  • For every season
Garden type
  • Cottage garden
  • Rock garden
  • Gravel garden
Garden spaces
  • Flower beds
  • Walls, trellises and pergolas
  • Borders
Gardening expertise
  • beginner
Time to reach full size
  • 2 to 5 years
2 Related plants