Centaurea cyanus 'Black Ball'

Centaurea cyanus 'Black Ball'

Cornflower

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Flowers
Flowers
Yes
Yes
Yes

Key Information

  • Botanical name: Centaurea cyanus 'Black Ball'
  • Common name: Cornflower
  • Plant type: Annual

Height: 75cm

Spread: 30cm

Flower colour:
  • Purple
Foliage colour:
  • BlueGreen
  • Features: Attractive to wildlife, Flowers

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The annual blue cornflower, Centaurea cyanus, is a slender plant bearing pretty flowers in rich shades of blue. It's commonly used in pictorial and annual meadow schemes, and makes an excellent cut flower. Cultivars of the species may have red, pink, and white flowers.

Centaurea cyanus 'Black Ball' bears unusual chocolate-coloured flowers on thin wiry stems. It's extremely attractive to bees.

For best results, grow Centaurea cyanus 'Black Ball' in moist but well-drained soil, in full sun. The wiry plants may need support in exposed situations. Deadhead spent blooms to prolong flowering in summer, but leave seeds to develop towards autumn, as these will provide food for birds.

Position

  • Sun exposure: Full sun
  • Aspect: South facing, West facing
  • Position in border: Front
  • Hardiness: Hardy
  • Soil type: Well drained/light/sandy

Wildlife

Attracts:
  • Bees

  • Beneficial insects

  • Birds

  • Butterflies / Moths

  • Other pollinators

  • Wildlife features: Nectar/pollen rich flowers, Seeds for birds

Care routine

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Sow
Sow
Yes
Yes
Plant
Plant
Yes
Yes

Toxicity

Toxic to:
  • People

  • Cats

  • Dogs

  • Birds

  • Horses

  • Livestock

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