Dianthus Seeds caryophyllus Trailing Carnations Mixed Seeds Ref: TM01403180 SowingSow spring to autumn in good free draining seed compost, just covering the seed with compost. Germination usually takes 14-21 days at 16-21C (60-70F).GrowingWhen seedlings are large enough to handle transplant into 8cm (3in) pots. grow cool and finally plant out 9in (23cm) apart into asunny spot in free draining soil, or plant at an angle in hanging baskets or windowboxes where they will spread outwards and downwards.Aftercare Overwinter autumn sown plants in a well ventilated cold frame and plant out in spring.FloweringSummercroppingPlant typeHardy Perennial Trailer Price: £1.99 Quantity: