Showy Onion (Allium rosenbachianum)

Showy Onion
Scientific Name: Allium rosenbachianum Regel
Family: Liliaceae

Recommended Temperature Zone:
sunset: All zones
USDA: 5-9
AHS: 9-5

Sun Exposure: Full sun

Origin: Turkestan

Growth Habits: Onion-like bulbs, 3 feet tall (90 cm); strap-like, blue-green leaves, 18 inches long (45 cm), 2 inches wide

Watering Needs: Ample water, good drainage, fertile soil, rich in humus.

Another onion similar to Allium giganteum, a bit smaller

Cultural Practices:
Plant the bulbs in the fall, 2 to 3 inches deep (5-7.5 cm), in groups 6-8 inches apart (15-20 cm)

Blooming Habits:
Globose flower clusters, 3 to 5 inches in diameter (7-12 cm) of rose to purple flowers, in late spring-early summer, on 2 to 3 feet long stems (60-90 cm). They are excellent as cut flowers, and dry bouquets.

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