Allium caeruleum (Azure-flowered garlic)
Other names: Blue-flowered garlic, Allium azureum , Allium 'Azureum', Allium caeruleum azureum, Allium coerulescens, Blue of the heavens, Blue globe onion
A. caeruleum is a clump-forming, bulbous perennial with linear, grey-green leaves and erect stems bearing compact, dense, rounded clusters of blue flowers in early summer.
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0.1m max. spread |
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1m max. height |
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2-5 years to maturity |
Allium sikkimense (Sikkim onion)
Other names: Blue-flowered allium, Allium kansuense, Allium tibeticum
A. sikkimense is a bulbous perennial with linear, mid-green leaves, and nodding umbels of small, bell-shaped, blue, sometimes white, flowers in early summer.
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0.1m max. spread |
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0.25m max. height |
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2-5 years to maturity |
Allium cyaneum (Dark blue garlic)
Other names: Allium purdomii, Allium beesianum, Blue onion, Ornamental onion
A. cyaneum is a clump-forming, bulbous perennial with short, spreading rhizomes, grass-like, dark green leaves, and umbels of bell-shaped, blue flowers in summer.
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0.1m max. spread |
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0.25m max. height |
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2-5 years to maturity |
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