Allium giganteum
Template:Short description Template:Speciesbox
Allium giganteum, common name giant onion or giant leek, is an Asian species of onion in the Onion Family (Alliaceae), native to central and southwestern Asia but cultivated in many countries as a flowering garden plant.[1][2] It is the tallest species of Allium in common cultivation, growing to Script error: No such module "convert"..[3]
In early to midsummer, small globes of intense purple umbels appear, followed by attractive fruiting umbels. A popular cultivar, 'Globemaster', is shorter (Script error: No such module "convert".) but produces much larger, deep violet, umbels (Script error: No such module "convert".). These globular umbels can contain thousands of florets (i.e. tiny flowers). A bulb dealer in Arcadia, California, counted 5286 florets from a single umbel.[4] Both varieties have been granted the Royal Horticultural Society's Award of Garden Merit.[5][6][7]
In nature, the species is found in Iran, Afghanistan, Turkmenistan, Tajikistan, and Uzbekistan.[8] In cultivation in the US, it performs well in USDA hardiness zones 6–10.[9]
Eating flowers, seeds, leaves, and stems can cause nausea, vomiting, and diarrhea due to the sulfides they contain.[10]
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Flower opening
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References
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- ↑ Regel, Eduard August von 1883. Gartenflora (1883) 32: 91
- ↑ Tropicos, Allium giganteum Regel
- ↑ Missouri Botanical Garden: Allium giganteum
- ↑ Long Beach [California] Independent Press Telegram (January 24, 1970) page B3
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- ↑ Template:PFAF
- ↑ Kew World Checklist of Selected Plant Families
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