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Variegated Japanese Rooftop Iris

Iris tectorum 'Variegatum'

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Variegated Japanese Rooftop Iris (Iris tectorum 'Variegatum') at Meadows Farms Nurseries

Variegated Japanese Rooftop Iris foliage

Variegated Japanese Rooftop Iris foliage

(Photo courtesy of NetPS Plant Finder)

Plant Height:  12 inches

Flower Height:  18 inches

Spacing:  14 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  5b

Ornamental Features

Variegated Japanese Rooftop Iris has masses of beautiful blue flag-like flowers at the ends of the stems from mid to late spring, which are most effective when planted in groupings. The flowers are excellent for cutting. Its attractive sword-like leaves remain green in color with showy white variegation throughout the season. The fruit is not ornamentally significant.

Landscape Attributes

Variegated Japanese Rooftop Iris is an herbaceous perennial with tall flower stalks held atop a low mound of foliage. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition.

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.

Variegated Japanese Rooftop Iris is recommended for the following landscape applications;

  • Mass Planting
  • General Garden Use
  • Groundcover
  • Container Planting

Planting & Growing

Variegated Japanese Rooftop Iris will grow to be about 12 inches tall at maturity extending to 18 inches tall with the flowers, with a spread of 18 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 14 inches apart. Its foliage tends to remain dense right to the ground, not requiring facer plants in front. 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 does best in average to evenly moist conditions, but will not tolerate standing water. It is not particular as to soil pH, but grows best in rich soils. It is somewhat tolerant of urban pollution. This is a selected variety of a species not originally from North America. It can be propagated by division; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.

Variegated Japanese Rooftop Iris is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. It is often used as a 'filler' in the 'spiller-thriller-filler' container combination, providing a mass of flowers and foliage against which the larger thriller plants stand out. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Massing  Garden  Groundcover  Container 
Applications
Flowers  Foliage Color  Plant Form 
Ornamental Features

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