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Centaurea cyanus
FLOWER-CORNFLOWER BOY BLUE is a large-flowered cornflower in classic bright blue. This is one of the prettiest wildflowers, & is used to populate entire fields with it’s an incredible color. A favorite annual, Blue Cornflower adds true blue blooms to the summer garden. Also known as Bachelor Button, silver foliage offsets its blue blooms tremendously and attracts birds with its seed. Blue Cornflower is extremely easy to grow and is gorgeous planted on its own or paired with other colors of Cornflower.

Cover seeds lightly & pat down, keep moist but not wet. Sow direct early spring or autumn.


Germination Time (Days) 14 – 21
Flowering Time (Days) 100 – 130
Sowing Depth (mm) 3
Plant Spacing (cm) 25 – 40
pH 6 – 7
Soil Temperature (°C)
Hardy / Frost Tender Hardy
Sow Direct / Raise Seedlings Raise Seedlings
Seed Preparation