The nectar-rich flowers of this charming, low-growing Polka Dot seed mixture will be sought by butterflies, lacewings and bees throughout the summer, while wild birds will appreciate the food provided by the seed heads in autumn. Cornflower is an easy-to-grow hardy annual which flowers the same year as sowing. Its seeds can be sown direct in the garden where it is to flower. It thrives in full sun on well-drained soils, including those which are dry, of low fertility or limy.