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Siberian Iris

Iris sibirica

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Siberian Iris (Iris sibirica) at Ashcombe Farm & Greenhouses

Iris sibirica flowers

Iris sibirica flowers

(Photo courtesy of NetPS Plant Finder)

Plant Height:  18 inches

Flower Height:  24 inches

Spacing:  18 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  1b

Description:

Siberian iris varies from white to blue; blooms emerge from lush, sword-like foliage; hardy and easy to grow; cut back in the fall to reduce pests

Ornamental Features

Siberian Iris features bold blue flag-like flowers with yellow overtones and white centers at the ends of the stems in late spring. The flowers are excellent for cutting. Its sword-like leaves remain green in color throughout the season. The fruit is not ornamentally significant.

Landscape Attributes

Siberian Iris is an herbaceous perennial with tall flower stalks held atop a low mound of foliage. Its relatively fine texture sets it apart from other garden plants with less refined foliage.

This plant will require occasional maintenance and upkeep, and should be cut back in late fall in preparation for winter. Deer don't particularly care for this plant and will usually leave it alone in favor of tastier treats. It has no significant negative characteristics.

Siberian Iris is recommended for the following landscape applications;

  • Mass Planting
  • General Garden Use

Planting & Growing

Siberian Iris will grow to be about 18 inches tall at maturity extending to 24 inches tall with the flowers, with a spread of 24 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 18 inches apart. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 10 years.

This plant does best in full sun to partial shade. It prefers to grow in average to moist conditions, and shouldn't be allowed to dry out. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution. This species is not originally from North America. It can be propagated by division.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Massing  Garden 
Applications
Flowers  Plant Form 
Ornamental Features