Siberian iris 'Butter and Sugar'

Iris sibirica 'Butter and Sugar' | Also known as: Sword Lily 'Butter and Sugar', Iris 'Butter and Sugar', flag 'Butter and Sugar' | Rating: 0 votes | Print / Pdf

Iris sibirica, also known as Siberian iris, is an herbaceous perennial. In early summer, Siberian iris produces deep purple showy flowers on tall stalks to provide great garden architecture. I. sibirica should be planted in full sun or partial shade where the soil is wet throughout most of the year, making it an ideal bog and rain garden plant. However, it can tolerate dry soils due to its voracious root growth. It’s an ideal addition to herbaceous borders and works well when planted beside streams and ponds. Siberian iris’s attractive foliage offers additional interest around the year.

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Plant
Known dangers?
  • yes
Dangers: comments
  • Avoid eating this plant, or you may have severe stomach upset. Its sap may irritate your skin.
Height [m]
  • 0.6 - 0.8
Spread [m]
  • 0.3 - 0.4
Dominant flower colour
  • Yellow
Flower Fragrance
  • No, neutral please
Flowering seasons
  • Early summer
  • Mid summer
Foliage in spring
  • Green
Foliage in summer
  • Green
Propagation methods
  • seed
  • division
Environment
Acidity
  • Acidic
  • Neutral
  • Alkaline
Hardiness zone
  • Z3-8
Heat zone
  • H9-1
Winter temperatures [°C]
  • -40 - -7
Heat days
  • 0 - 150
Moisture
  • well-drained
  • well-drained but frequently watered
Soil type
  • sandy
  • Clay
  • chalky
  • loams
Sun requirements
  • Full sun
  • Partial shade
Exposure
  • Exposed
  • Sheltered
Usage
Standard category
  • Flowers & bulbs
  • Perennials
Grown for
  • Attractive Flowers
Creative category
  • For Beginners
  • Colours
  • Show-offs
  • For birds & bees
  • Roses & classics
Garden type
  • Cottage garden
Garden spaces
  • Flower beds
  • Borders
Gardening expertise
  • beginner
Time to reach full size
  • 2 to 5 years
18 Related plants
Iris sibirica

Siberian iris

PLANTS Iris sibirica

Iris sibirica, also known as Siberian iris, is an herbaceous perennial. In early summer, Siberian iris produces deep purple showy flowers on tall stalks to provide great garden architecture. I. sibirica should be planted in full sun or partial shade where the soil is wet throughout most of the year, making it an ideal bog and rain garden plant. However, it can tolerate dry soils due to its voracious root growth. It’s an ideal addition to herbaceous borders and works well when planted beside streams and ponds. Siberian iris’s attractive foliage offers additional interest around the year.

Siberian iris 'Alba'

PLANTS Iris sibirica 'Alba' | -40°C - -7°C beginner Full sun, Partial shade

Siberian iris 'Oban'

PLANTS Iris sibirica 'Oban' | -40°C - -7°C beginner Partial shade, Full sun