Bachelor button (Centaurea cyanus) is an easy-to-grow annual with cornflower-blue blooms and an upright ... twining vines with heart-shaped leaves quickly clamber up a string or wire trellis ...

The same anthocyanin pigment makes roses red but cornflowers blue 1, a phenomenon that has so far not been entirely explained. Here we describe the X-ray crystal structure of the cornflower ...

It looks simple - a pretty blue cornflower - but this plant is causing controversy in Austria. It's the chosen flower of the far-right Freedom Party, even though it was once associated with the Nazis.