Thompson & Morgan - Flowers - Wild Flower Cornflower Blue Diadem - 180 Seed
Cornflower - Blue Diadem
Intense deep blue, 6cm double powder-puff flowers.
Optimum Germination Temperature: 18-20C. Sow from March to April or from August to September for overwintering, 6mm deep. The seed should be sown outdoors where it is to flower in spring or autumn and thinned out to 30cm apart. Plant in full sun in ordinary garden soil.