Allium caeruleum (blue globe onion, blue ornamental onion, blue-of-the-heavens, blue-flowered garlic; syn. Allium azureum Ledeb.) is an ornamental bulbous plant of the onion genus, native to Central Asia (Kazakhstan, Kyrgyzstan, Siberia, Tajikistan, Uzbekistan, and Xinjiang).[3][4][5] In these regions, it is found on dry slopes, plains, and steppes.[6]

blue-of-the-heavens Лук голубой 棱叶薤 leng ye xie
1847 illustration[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Asparagales
Family:	Amaryllidaceae
Subfamily:	Allioideae
Genus:	Allium
Species:	A. caeruleum
Binomial name
Allium caeruleum Pall.
Synonyms[2]
Allium azureum Ledeb. Allium caerulescens G.Don Allium viviparum Kar. & Kir.

This plant is cited in the Flore des Serres et des Jardins de l'Europe puis L'illustration horticole by Charles Antoine Lemaire. It grows to 80 cm (31"), producing strap-shaped leaves and small globes (umbels) of blue flowers in early summer. The one-inch wide globular flower heads attract butterflies.[7] The plant has been granted the British Royal Horticultural Society's Award of Garden Merit (1993).[8]

A. caeruleum thrives in well-drained soil in full to partial sun.[9] It is deer-resistant and suitable for USDA hardiness zones 4–8.[6]

Gallery

• 
  Allium caeruleum var. bulbilliferum Egyptian Top Onion at Minnesota Landscape Arboretum
• 
  Flower head closeup

References

На других языках

[ru] Лук голубой