Cornflower 'Blue Boy'

Centaurea cyanus

How to grow Cornflower 'Blue Boy'

  • Partial Sun

  • Medium

Try to plant in a location that enjoys partial sun and remember to water moderately. Keep in mind when planting that Blue Boy is thought of as half hardy, so it will require protection in frosts and low temperatures.

Growing Blue Boy from seed

Sow at a depth of approx. 0.23 inches (0.6 cm) and aim for a distance of at least 0.98 inches (2.5 cm) between Cornflower plants.

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

Transplanting Blue Boy

Ensure that temperatures are mild (minimum night temperatures should be around 16°C / 61°F) and all chance of frost has passed before planting out, as Blue Boy is a half hardy plant.

Harvesting Blue Boy