Cornflower 'Black Ball'

Centaurea cyanus

How to grow Cornflower 'Black Ball'

  • Partial Sun

  • Medium

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

Growing Black Ball 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 Black Ball about 7 days after your last frost date.

Transplanting Black Ball

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

Harvesting Black Ball