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IRIS sibirica 'White Swirl'

Image of Iris sibirica 'White Swirl'

Jesse Saylor

Family

Iridaceae

Botanical Name

IRIS sibirica 'White Swirl'

Plant Common Name

Siberian Iris, White Swirl Siberian Iris

General Description

The snowy flowers of Siberian iris ‘White Swirl’ are softened with a touch of creamy yellow at the centers. Blooming in late spring to early summer, the gleaming white blossoms of this beautiful iris make a particularly elegant statement in a moonlight garden.

The parent species of Siberian iris are native from Central Europe through to Russia where they grow in a wide range of conditions from wet water's edge to well drained rocky hillsides. This versatility makes these tough perennials adaptable to a wide range of conditions. Siberian iris produce spectacular flowers in late spring to early summer in varying shades and combinations of blue, white, purple and yellow. The linear, almost grass-like, green foliage of Siberian iris remains fresh and attractive throughout the growing season.

Siberian iris prefer sunny locations and fertile soil with average drainage. The cold-tolerant plants form dense, slowly spreading clumps which should be divided every three years or so. These vigorous perennials look especially impressive planted in masses or as upright accents at the edge of water gardens and pools.

Characteristics

  • AHS Heat Zone

    9 - 1

  • USDA Hardiness Zone

    3 - 8

  • Sunset Zone

    A2, A3, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23

  • Plant Type

    Perennial

  • Sun Exposure

    Full Sun, Partial Sun

  • Height

    24"-36" / 61.0cm - 91.4cm

  • Width

    18"-24" / 45.7cm - 61.0cm

  • Bloom Time

    Early Summer, Summer

  • Native To

    Eastern Europe, Russia/Siberia

Growing Conditions

  • Soil pH

    Acidic, Neutral, Alkaline

  • Soil Drainage

    Average

  • Soil type

    Clay, Loam, Sand

  • Tolerances

    Wet Site, Drought

  • Growth Rate

    Fast

  • Water Requirements

    Average Water

  • Habit

    Clump-Forming

  • Seasonal Interest

    Summer

Ornamental Features

  • Flower Interest

    Showy

  • Flower Color

    White, Purple, Blue Violet

  • Foliage Color (Spring)

    Green, Dark Green

  • Foliage Color (Summer)

    Green, Dark Green

  • Foliage Color (Fall)

    Green, Dark Green

  • Fragrant Flowers

    Yes

  • Fragrant Fruit

    No

  • Fragrant Foliage

    No

  • Bark or Stem Fragrant

    No

  • Flower Petal Number

    Single

  • Repeat Bloomer

    No

  • Showy Fruit

    No

  • Edible Fruit

    No

  • Showy Foliage

    Yes

  • Foliage Texture

    Medium

  • Foliage Sheen

    Matte

  • Evergreen

    No

  • Showy Bark

    No

Special Characteristics

  • Usage

    Cutflower, Feature Plant, Foundation, Mixed Border

  • Sharp or Has Thorns

    No

  • Invasive

    No

  • Attracts

    Butterflies

  • Self-Sowing

    No