Bachelor's Buttons 'Classic Fantastic'
Centaurea cyanus
 
 Classic mixture of single and semi-double blooms in cool blue shades, ranging from light heavenly blue to dark blue, and a blue and white bicolor. Cornflower 'Classic Fantastic' is easy to grow and creates a long flowering display in borders, or when used as a cut flower.
 
Culinary note: Add petals to salads as a colorful garnish or sprinkle over omelettes or even pasta.
 
Details:

Life Cycle: Annual
Height:Full sun
Height: 36-40"
Days to maturity: 65-80 days
Seed depth: 1/4 "
Plant spacing: 12"
Approx seeds per packet: 100

How to Grow:
Frost tolerant, can tolerate freezing temperatures, so seeds can be planted in early spring, or in the fall where winters are mild. Fast growth is encouraged by mixing a balanced organic fertilizer into the soil before planting.I usually sow Cornflower seeds in fall and spring. That gives me a longer flowering period with a succession of blooms
 
Harvest:
Cornflowers make good cut flowers. Pull up the plants in mid to late summer, when they no longer look attractive.
Harvest individual flowers when buds are about half way open, or harvest large branching stems when most of the buds in the spray are colored.
 
Vase life:
Up to 7 days, just change water regularly.Drop of bleech is always helpful