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Cornflower, 'Black Ball'

Centaurea cyanus 'Black Ball'  • 

Photo: Cornflower, 'Black Ball'

General description

Altogether charming, dark crimson flowers, which look almost black on cloudy days, sit on top of upright, branching stems, looking like miniature pom-poms. Ideally suited to wildflower meadows or naturalised planting schemes, the flowers will hold their colour well and will attract beneficial insects in their droves.

Plant requirements

In early autumn surface-sow in trays of good seed compost and over-winter in a cold frame or greenhouse, thinning out and potting on as they grow. These can be planted out in spring and produce early flowers. Alternatively, shallow-sow directly into a well-prepared seedbed in spring, thinning out to 15cm. This plant will produce more flowers when grown in poor soils, so don’t over-fertilise. Pinching out the growing tips will encourage bushier growth.

Properties

Height
12 - 40 cm
Color
  •   
Sunlight
Full sun
PH
Alkaline
Neutral
Moisture
Well-drained
Hardiness
Hardy