Annuals, Weeds > Centaurea > Centaurea cyanus > Centaurea cyanus
Centaurea cyanus
Cornflower, Bachelor's Button
| Family |
| Asteraceae |
| Genus |
| Centaurea |
| Species |
| cyanus |
| Category |
| Annuals, Weeds |
| USDA Hardiness Zone |
| 2 - 11 |
| Canadian Hardiness Zone |
| 0a - Requires cool season protection under glass. |
| RHS Hardiness Zone |
| H7 - H1c |
| Temperature (°C) |
| (-45) - 50 |
| Temperature (°F) |
| (-43) - 10 |
| Height |
| 0.3m - 0.9m |
| Spread |
| 0.2m - 0.6m |
Photographs
Cultivars
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Description and Growing Information
Flowering Period
| Growth |
| Fast |
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