Grow guide
How to grow Tall Blue Boy Cornflower
Centaurea cyanus
- Type
- Cornflower
- Zones
- USDA zones 2–11
- Sun
- Full
- Time to harvest
- 65–80 days
- Spacing
- 9″ apart
- Density
- 1 per sq ft
- Habit
- Upright
- Frost tolerance
- Hardy
- Sowing
- Direct sow
- Start indoors
- 0 weeks before last frost
- Succession
- Every 14 days
Care
- Water Weekly
- Deadhead As needed
- Harvest As needed
Notes
Direct sow 2-4 weeks before last frost; petals are mildly sweet; self-sows readily and tolerates poor, well-drained soil.
Grows well nearby
Track Tall Blue Boy Cornflower from seed to harvest with Evengrow.
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