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perennial

Star Of Persia Onion*

Allium christophii

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Star Of Persia Onion (Allium christophii) at Kennedy's Country Gardens

Star Of Persia Onion flowers

Star Of Persia Onion flowers

(Photo courtesy of NetPS Plant Finder)

Star Of Persia Onion (Allium christophii) at Kennedy's Country Gardens

Star Of Persia Onion in bloom

Star Of Persia Onion in bloom

(Photo courtesy of NetPS Plant Finder)

* This is a "special order" plant - contact store for details

Plant Height:  12 inches

Flower Height:  24 inches

Spread:  12 inches

Sunlight:  full sun 

Hardiness Zone:  2a

Other Names:  Flowering Onion

Description:

A beautiful late-spring and early summer selection that looks lovely in garden beds, borders or in fresh cut arrangements; tall flower stalks produce star shaped, silver-purple flowers, forming a large globe; low, mounded foliage; low maintenance

Ornamental Features

Star Of Persia Onion features bold balls of lightly-scented purple flowers with silver overtones at the ends of the stems from late spring to early summer. 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

Star Of Persia Onion is an open 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 is a relatively low maintenance plant, and should only be pruned after flowering to avoid removing any of the current season's flowers. It is a good choice for attracting butterflies to your yard, but is not particularly attractive to deer who tend to leave it alone in favor of tastier treats. It has no significant negative characteristics.

Star Of Persia Onion is recommended for the following landscape applications;

  • Border Edging
  • General Garden Use
  • Container Planting

Planting & Growing

Star Of Persia Onion will grow to be about 12 inches tall at maturity extending to 24 inches tall with the flowers, with a spread of 12 inches. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 5 years. As this plant tends to go dormant in summer, it is best interplanted with late-season bloomers to hide the dying foliage.

This plant should only be grown in full sunlight. It does best in average to evenly moist conditions, but will not tolerate standing water. It is not particular as to soil type or pH, and is able to handle environmental salt. It is highly tolerant of urban pollution and will even thrive in inner city environments. This species is not originally from North America. It can be propagated by multiplication of the underground bulbs.

Star Of Persia Onion is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. With its upright habit of growth, it is best suited for use as a 'thriller' in the 'spiller-thriller-filler' container combination; plant it near the center of the pot, surrounded by smaller plants and those that spill over the edges. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

 

* This is a "special order" plant - contact store for details

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Edging  Garden  Container 
Applications
Flowers  Plant Form  Attracts Wildlife 
Ornamental Features