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Centaurea cyanus
t is an annual plant growing to 16 - 35 inches tall, with grey-green branched stems. The leaves are lanceolate, 1 - 4 cm long. The flowers are most commonly an intense blue color, produced in flowerheads (capitula) 1.5 - 3 cm diameter, with a ring of a few large, spreading ray florets surrounding a central cluster of disc florets. The blue pigment is protocyanin, which in roses is red.
It is native to Europe.
Other names: Bachelor's button, Bluebottle, Boutonniere flower, Hurtsickle, Cyani flower
Spotted on Jul 17, 2013
Submitted on Jul 18, 2013
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