Centaurea seeds (Cornflower seeds cyanus nana Jubilee Gem Seeds Ref: TM01406156 SowingSow in early spring where they are to flower in well cultivated soil. Sow thinly 6mm (¼in) deep in drills 30cm (12in) apart.GrowingThin out the seedlings to 30cm (12in) apart. Dwarf Jubilee Gem can also be sown in the late summer/early autumn to produce even better plants for flowering next summer, and final thinning should be left until the spring so that the plants are about 45cm (18in) apart.Aftercare FloweringSpring to early SummercroppingPlant typeHardy Annual Price: £1.89 Quantity: