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James Burghardt
Liliaceae
Allium 'Firmament'
Firmament Ornamental Onion, Ornamental Onion
This gorgeous ornamental allium graces the garden with globes of starry, silvery-purple blossoms in late spring. The rounded, softball-sized flower clusters are borne on sturdy, slender stems which rise above strappy, deep green basal leaves that emerge in spring and fade as the plants bloom.
In autumn, plant the bulbs of ‘Firmament’ in fertile, well-drained soil at a depth of two to three times their diameter. Full sun is essential, and dryish summer conditions are preferable. Plant in small groups among the foliage of other plants in order to mask the dying foliage at the base of the stems. Lift and divide the bulbs only when they become crowded.
Give this dramatic perennial a starring role in the mixed border or rock garden, or use it to dress up the vegetable garden. Bulbous alliums such as this are wonderful combined with other late spring to early summer bloomers such as Siberian iris, roses, and meadow sage. They also make excellent, long-lasting cut flowers, and add punch to both fresh and dried flower arrangements.
9 - 5
5 - 8
2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Bulb or Corm or Tuber
Full Sun
24"-30" / 61.0cm - 76.2cm
9"-12" / 22.9cm - 30.5cm
Late Spring
Hybrid Origin
Acidic, Neutral, Alkaline
Well Drained
Loam, Sand
Drought
Fast
Average Water
Upright/Erect
Spring
Showy
Purple, Lavender
Green
Yes
Single
No
Coarse
Glossy
Cutflower, Mixed Border
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