Centaurea cyanus

Cornflower, Blue Bottle

Family: Asteraceae Aster


Type Annual
USDA Hardiness range n/a
Exposure Partial shade to full sun
Bloom color Blue, lavender, pink, purple, white
Bloom time Early Summer to Mid Fall
Water needs Dry to moist
Landscape uses Border, container, foundation, massing, seashore, specimen
Height 12" to 24" / 30cm to 60cm
Spread 24" to 30" / 60cm to 75cm
Growth rate Fast
Bloom attributes Attracts butterflies, suitable for cut flowers, suitable for dried flowers
Leaf color Green, silvery
Fruit color n/a
Soil pH requirements Neutral, alkaline
Soil type Sandy, clay, loamy
Form Upright or erect
Attributes and features Attracts birds, naturalizing