Grow-A-long Cornflowers (Centaurea cyanus) 

Cornflowers are one of the easiest Annuals to grow and a brilliant one for the beginner gardener.
As well as cut flowers, cornflowers are edible, use them to dress cakes or salads.
For best results Sow one seed per cell during September or early October while the temperatures are still warm. Cornflowers will germinate and grow quickly so it’s important that if not started in a greenhouse, you move trays out where there is plenty of light as soon as seedlings emerge.
Note: although It is easy to trick cornflowers into germinating during the dark days of winter, it’s not a good idea, they will quickly become leggy and sickly. plants need to develop a good root ball before the nights cool.