Star of Persia grows to 50 cm (20 in) and is cultivated in gardens for its large showy umbels of silvery pink star-shaped flowers, 20–25 cm (7.9–9.8 in) in diameter, which appear in early summer. The flowers are followed by attractive fruiting clusters. The plant has received the Royal Horticultural Society's Award of Garden Merit.[8][9]
A. cristophii performs best in sun to part shade.[10] It is toxic to cats, dogs, and horses.[11] It prefers sandy, gritty soil with good drainage, and is best suited to USDA hardiness zones 5–8.[12]
References
^1904 illustration from Curtis's botanical magazine volume 130, series 3, number 60, plate 7982, as Allium albopilosum (http://www.botanicus.org/page/451490)
Author Joseph Dalton Hooker (1817-1911)
^Fritsch, R. M. 1999. (1419) Proposal to conserve the name Allium cristophii, preferably with the spelling A. christophii, against A. bodeanum (Liliaceae). Taxon 48(3): 577–579.
^Brummitt, R. K. 2001. Report of the Committee for Spermatophyta: 51. Taxon 50(2): 559–568.