Wholesale Only

Iris sibirica, ‘White Swirl’

This tall Siberian iris produces beautiful ruffled, pure white flowers with a yellow throat in late spring on rigid stems, which rise to 30-36″ high above a clump of arching, narrow, grass-like, linear leaves. This wonderful, beardless, Siberian iris works well in a contemporary or minimalist garden. Ideal for a sunny waterside planting or well-drained border, to enhance flowering divide congested clumps every three to five years. Considered to be one of the finest whites available.

Iris sibirica: Clumps will grow together and snuff out weeds. After blooms are gone, the vase-shaped foliage will retain its slightly bluish-green color into the fall. Excellent cut flower. This plant will make very large clumps within a few years that carry just masses of flowers.

Exceptional hardiness, easy culture, long life and durable, handsome foliage rank this perennial among the favorites. Performs well near streams, bogs or in open meadows, and blooms between spring flowering and summer flowering perennials.


# Description Qty per Unit Units Available Price/Unit
IR160 Iris sibirica, 'White Swirl' out of stock $0.00

Plant Details +

Size #1
Height 30-36"
Spacing 10-18"
Hardiness Zones 3-10
Exposure Full sun to part shade
Foliage Slightly Bluish-Green Arching, Linear and Grass-Like
Flower Ruffled Clear-White with a Yellow Throat
Bloomtime June

General Information +

Botanical: Iris sibirica 'White Swirl'

Common: Siberian iris

Family: Iridaceae

General Characteristics: Mixes well with other perennials and provides excellent color and contrast to the perennial border. Also effective when planted on a slope or hillside or along a stream or pond. Massed plantings or well-placed specimens can enhance almost any setting, and the foliage provides lasting beauty after bloom. This Iris needs plenty of water throughout the season to continue to looks its best.

Planting/Care Instructions +

Pests or Diseases: No serious pest or disease problems. Siberian iris is less susceptible to iris borer and soft rot than the tall bearded iris.

Planting Instructions: Dig a hole large enough to encompass the roots without bending or circling. Set the plant in place so the crown (part of the plant where the root meets the stem) is about 1-2 inches below the soil surface. Cover with soil to the original soil surface and water thoroughly. Easily grown in average, medium wet to wet soil in full sun to part shade. An adaptable plant which tolerates a wide range of soils. It is best grown in very moist, fertile, slightly acid soil, including boggy conditions, but will also tolerate a poor, dry soil because its thick roots penetrate the soil deeply.