Cornflower
This messicolous and melliferous species offers an abundance of beautiful blue flowers, which are both edible and medicinal. Unfortunately, it is becoming increasingly rare in fields.
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Sow on the surface, in trays under a well-lit shelter. Press lightly and keep moist. After emergence, prick out into cups and plant out when plants have 5 to 6 leaves, 20 to 30 cm apart in all directions. For direct sowing in the ground, sow in rows 20 to 30 cm apart. Thin to 20 or 30 cm when plants have 5 or 6 leaves.
In mild climates, it is also possible to sow in autumn for earlier flowering the following summer.
Centaurea cyanus
150 seeds
From 40 to 60 cm
Eurasia
Cornflowers are traditionally used for their medicinal diuretic properties and to treat digestive symptoms.