Cosmos bipinnatus Sonata Series Mixed Seeds Ref: TM01406203 SowingSow 3mm (1/8in) deep in spring at 21-24C (70-74F) in a good seed compost. Keep soil damp but not wet, sealing in a polythene bag after sowing is helpful. Germination usually takes 5-10 days.GrowingWhen seedlings are large enough to handle, transplant and grow on in cooler conditions. Gradually acclimatise to outdoor conditions for 10-15 days before planting out after all risk of frost 60cm (24in) apart.Aftercare Plant in a sunny spot on light well drained soil. For pot plants, transplant seedlings into 7.5cm (3in) pots, grow cool, well ventilated and give plenty of light, but shade from direct sun.FloweringcroppingPlant typeHalf-hardy Annual Price: £1.89 Quantity: