An annual plant that also answers to Cornflower, Bachelor’s Button, Bluebottle, Hurtsickle, Hardheads, Knapweed, and Star Thistle. We use the genus name to keep it nice and simple. Grows well in any ordinary, well drained garden soil.  Seeds will flourish within the pH range of 5.5-7.0. Deadhead regularly to prolong blooming. You will find planting several times over the spring will produce a longer bloom time throughout summer and early fall.