Centaurea cyanus 'Blue Boy'
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An annual cornflower, to around 80cm high in flower, with lance-shaped, grey-green leaves. Showy flower-heads 3-4cm across, with vivid blue florets crowded around the outside and dark purple stamens in the centre, are produced all through the summer
Scientific classification
- Species
- Centaurea cyanus 'Blue Boy' (Centaurea cyanus 'Blue Boy')
- Genus
- Centaurea
- Family
- Asteraceae
- Information to be completed
- Toxicity
- Annual Biennial
- Plant type
- 0.5-1 metres
- Height
- 0.1-0.5 metres
- Spread
- Deciduous
- Foliage
- Clump forming
- Habit
- Spring · Summer
- Season of interest
- Full sun
- Sunlight
- Information to be completed
- Ideal temperature
Centaurea cyanus 'Blue Boy' pictures
Distribution of Centaurea cyanus 'Blue Boy'
Distribution map
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Culture
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Toxicity
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Quick identification of Centaurea cyanus 'Blue Boy'
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Centaurea cyanus 'Blue Boy' care guide
- Moderate regular watering, allowing brief slight drying between soakings
- Watering
- Full sun
- Sunlight
- Information to be completed
- Ideal temperature
Watering
Moderate regular watering, allowing brief slight drying between soakings
Fertilizing
FertilizingBalanced perennial feed every four weeks from spring through summer
Pruning
PruningDeadhead to encourage more flowers, unless seed is required
Propagation
PropagationPropagate by seed (sown outdoors) in early spring. Sow successionally rather than all at once for a longer show of flowers
Growing
GrowingGrow in almost any well-drained soil in full sun. Thrives in poor soils but will not tolerate waterlogging
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Common pests and diseases
Diseases
May be susceptible to downy mildews, powdery mildews and rust diseases
Pests
Generally pest-free
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