Use the seeds the professionals use

Cut Flowers

CF Centaurea The Bride

CF Centaurea The Bride [CF0872]

Centaurea imperialis

An easy to grow heirloom annual with large fluffy white flowers that have a long vase life with a subtle sweet scent.

As with all Centaurea's they prefer full sun and need really good drainage.  They also don't like their roots to be disturbed so direct sow or transplant from plugs.