Alphabetical Plant Listing

Allium atropurpureum (Ornamental Onion)

Allium nigrum var. purpureum, Spring Bulbs, Spring Flowers


Allium atropurpureum is a hardy perennial bulb with star-shaped, deep purple-red flowers packed into a half-globe umbel, 2 in. wide (5 cm). Each flower is comprised of deep merlot-purple florets adorned with blueberry-purple eyes, which creates a wonderful contrast of colors. Blooming in late spring to early summer, the flowers are borne on sturdy, upright stems above strap-shaped green leaves. If left in the garden after the flowers have faded, the seed heads will remain ornamental and add months of interest.

  • Growing up to 2-3 ft. tall (60-90 cm), this beauty naturalizes easily and will come back year after year!
  • Easily grown in rich, sandy to gritty, dry to medium moisture, well-drained soils in full sun. Drought tolerant.
  • Attracts butterflies, but deer ignore it!
  • Stunning in beds, borders, cottage gardens. Spectacular in large sweeping drifts. For best visual impact, plant in groups (at least 10 to 15 bulbs). Excellent as cut flowers for both fresh and dried arrangements!
  • Mixes beautifully with other late spring flowering bulbs and creates stunning combinations with pink or white Delphiniums, Peonies or Irises.
  • To be planted in fall.
  • Native to Hungary and Turkey

Learn How To Plant And Care for Your Spring Flower Bulbs

 To achieve optimum flowering results, it is important to plant the bulbs at the right time.

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Requirements

Hardiness 4 – 7
Heat Zones 1 – 8
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Bulbs
Plant Family Alliums
Exposure Full Sun
Season of Interest Spring (Late)
Summer (Early)
Height 2' – 3' (60cm – 90cm)
Spread 1' – 2' (30cm – 60cm)
Spacing 8" (20cm)
Depth 8" (20cm)
Water Needs Average
Maintenance Low
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Dried Arrangements, Cut Flowers, Fragrant, Showy
Tolerance Deer, Drought, Rabbit
Attracts Butterflies
Garden Uses Beds and Borders
Garden Styles City and Courtyard, Gravel and Rock Garden, Informal and Cottage

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Great Plant Combination Ideas with Alliums

Guides with Alliums


©Clive Nichols

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 4 – 7
Heat Zones 1 – 8
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Bulbs
Plant Family Alliums
Exposure Full Sun
Season of Interest Spring (Late)
Summer (Early)
Height 2' – 3' (60cm – 90cm)
Spread 1' – 2' (30cm – 60cm)
Spacing 8" (20cm)
Depth 8" (20cm)
Water Needs Average
Maintenance Low
Soil Type Chalk, Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Dried Arrangements, Cut Flowers, Fragrant, Showy
Tolerance Deer, Drought, Rabbit
Attracts Butterflies
Garden Uses Beds and Borders
Garden Styles City and Courtyard, Gravel and Rock Garden, Informal and Cottage

Great Plant Combination Ideas with Alliums

Guides with Alliums

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Allium atropurpureum (Ornamental Onion)

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