How to Grow Cornflower: Growing Guide to Planting, Care & Harvest

Centaurea cyanus

Growing calendar

Typical timing for central Japan (Kanto region). Shift it for your own climate, and record your actual dates.

Guides

• How to Sow Cornflower Seed: Autumn Versus Spring Sowing
• Cornflower Care: Support, Feeding and Keeping Plants Upright
• Keeping Cornflower Flowering: Deadheading, Cutting and a Longer Season
• Cornflower Growing Calendar: What to Do Each Season
• Cornflower Problems: Mildew, Aphids and Plants That Fall Over

Common problems

Start from what you can see on the plant.

Pests and diseases (7)

Written byYasuGrowing vegetables and fruit in Chiba, Japan, and building Gadenin. Corrections are welcome. 15 years of growing.