Blue globe onion (Allium caeruleum)

Allium with true blue colour. It is a stunning ornamental onion with its inflorescence consisting of dozens of small star-shaped bright blue flowers forming a 3 cm wide  globe-shaped cluster atop stiff stems and narrow green leaves.  It remains ornamental in the garden well into summer. Good cut flower in fresh and dried arrangements.
Favorite of bees, butterflies and other pollinators.

Winterhardy perennial bulb
Height 60-100 cm
Width 15-30 cm
Spacing 5 cm
Flowerin time July 
Site sunny, medium moisture, well drained, chalky, sandy soil 
Propagation bulblets