Campanula Seeds - isophylla krystal Mixed Seeds Ref: TM01402831 SowingSow late winter to mid spring on the surface of a good seed compost just covering seed with a thin layer of compost or vermiculite. Germination takes 21-60 days at 15-18C (60-65F). Don't exclude light, sealing in a polythene bag after sowing is helpful.GrowingWhen large enough to handle, transplant into 7.5cm (3in) pots, and grow on in cooler conditions. Pot on as required. For container plants and hanging baskets grow on in 7.5cm (3in) pots, cool and well ventilated and plant up allowing each plant 15-23cm (6-9in) of space.Aftercare Allow plants to become established for 7-10 days before placing outdoors in late spring after all risk of frost 30cm (12in) apart. Overwinter in a cool well lit, frost free conservatory, keeping them just moist.FloweringSummercroppingPlant typeHalf-hardy Herbaceous Perennial Price: £2.99 Quantity: