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Centaurea cyanus 'Blue Diadem' (Cornflower, Blue-bottle). Close up of blue flower buds Stock Photo - Alamy
![Photo of the entire plant of Cornflower (Centaurea cyanus 'Blue Diadem') posted by Calif_Sue - Garden.org Photo of the entire plant of Cornflower (Centaurea cyanus 'Blue Diadem') posted by Calif_Sue - Garden.org](https://garden.org/pics/2011-10-22/Calif_Sue/28a777.jpg)
Photo of the entire plant of Cornflower (Centaurea cyanus 'Blue Diadem') posted by Calif_Sue - Garden.org
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PlantFiles Pictures: Centaurea, Bachelor's Button, Cornflower 'Blue Diadem' (<i>Centaurea cyanus</i>) by rebecca101
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PlantFiles Pictures: Centaurea, Bachelor's Button, Cornflower 'Blue Diadem' (<i>Centaurea cyanus</i>) by AnniesAnnuals
![Centaurea cyanus, 'Blue Diadem' Seeds £1.95 from Chiltern Seeds - Chiltern Seeds Secure Online Seed Catalogue and Shop Centaurea cyanus, 'Blue Diadem' Seeds £1.95 from Chiltern Seeds - Chiltern Seeds Secure Online Seed Catalogue and Shop](https://www.chilternseeds.co.uk/images/products/img_11446_11449.jpg)
Centaurea cyanus, 'Blue Diadem' Seeds £1.95 from Chiltern Seeds - Chiltern Seeds Secure Online Seed Catalogue and Shop
![Specializing in rare and unusual annual and perennial plants, including cottage garden heirlooms a… | Blue flowers garden, Bachelor button flowers, Backyard flowers Specializing in rare and unusual annual and perennial plants, including cottage garden heirlooms a… | Blue flowers garden, Bachelor button flowers, Backyard flowers](https://i.pinimg.com/736x/dc/df/26/dcdf2672e625870e51da6967acc0e142.jpg)