Centaurea cyanus

Centaurea cyanus

Cornflower

J F M A M J J A S O N D
Flowers
Flowers
Yes
Yes
Yes

Key Information

  • Botanical name: Centaurea cyanus
  • Common name: Cornflower
  • Plant type: Annual

Height: 90cm

Spread: 30cm

Foliage colour:
  • Green
  • 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.

For best results, grow Centaurea cyanus 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, Clay/heavy/moist, Chalky/alkaline

Wildlife

Attracts:
  • Bees

  • Beneficial insects

  • Birds

  • Butterflies / Moths

  • Other pollinators

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

Care routine

J F M A M J J A S O N D
Sow
Sow
Yes
Yes
Yes

Toxicity

Toxic to:
  • People

  • Cats

  • Dogs

  • Birds

  • Horses

  • Livestock

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