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Blue Cornflower

Centaurea cyanus


a small annual flowering plant in the family Asteraceae, native to Europe. 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 colour, 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. It flowers from June until August


full sun, high-average water daily. Soil pH requirements: neutral (6.6-7.5) to mildly alkaline (7.6-7.8). In the past it often grew as a weed in crop fields, hence its name (fields growing grains such as wheat, barley, rye, or oats were formerly known as "corn fields" in England). It is now endangered in its native habitat by agricultural intensification.


This was found in a field.

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1 Comment

keithp2012 7 years ago

Blue Cornflower

New York, USA

Lat: 40.70, Long: -73.35

Spotted on Sep 10, 2010
Submitted on Sep 10, 2010

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