Seed Swaps

Cornflower 'Black Magic'

Centaurea cyanus

  • 2 plantings
  • 1 available for swap
  • 1 wanted
  • 4 stashed

Black Magic is a popular variety of Cornflower, which belongs to the Centaurea genus (Centaurea cyanus 'Black Magic'). This variety is an Flower that typically grows as an Annual, which is defined as a plant that matures and completes its lifecycle over the course of a single year. Black Magic normally grows to a mature height of 90.0 cm (that's 2.93 feet imperial).

As Black Magic Cornflower is a low maintanence plant, it is great for beginner gardeners and those that like gardens that don't need much overseeing.

This variety plant info is provided by the myfolia gardener's wiki. All details about Black Magic have been kindly provided by our members.

How to grow Black Magic

  • Partial Sun

  • Medium

Try to plant in a location that enjoys partial sun and remember to water moderately. Keep in mind when planting that Black Magic is thought of as half hardy, so protect with a row cover whenever the temperatures drop. The USDA Hardiness Zones typically associated with Black Magic are Zone 6 and Zone 11.

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

Transplanting Black Magic

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

Harvesting Black Magic