Cosmos Seeds bipinnatus Seeds Gazebo Mixed Ref: TM01402026 SowingSow 3mm (1/8in) deep in February/March at 21-24C (70-75F) in a good seed compost. Germination takes 5-10 days.<p>Seed can also be sown outdoors in May where it is to flower once the soil has warmed up.GrowingWhen large enough to handle transplant the seedlings to boxes or 7.5cm (3in) pots, and grow on in cooler conditions. When about 5cm (2in) tall pinch out the growing point to make them bushy. Later, gradually acclimatise to outdoor conditions and plant out in late spring after all risk of frost has passed 30cm (12in) apart in full sun and well drained soil.Aftercare FloweringSummercroppingPlant typeHalf-hardy Annual Price: £2.09 Quantity: