Cornflower 'Double Blue'

Centaurea cyanus

How to grow Cornflower 'Double Blue'

  • Partial Sun

  • Medium

Double Blue likes a position of partial sun and remember to water moderately. Keep in mind when planting that Double Blue is thought of as half hardy, so remember to protect this plant from frosts and low temperatures.

Growing Double Blue from seed

Try to aim for a seed spacing of at least 0.98 inches (2.5 cm) and sow at a depth of around 0.23 inches (0.6 cm).

By our calculations, you should look at sowing Double Blue about 7 days after your last frost date.

Transplanting Double Blue

Ensure that temperatures are mild and all chance of frost has passed before planting out, as Double Blue is a half hardy plant.

Harvesting Double Blue