Chrysanthemum Seeds coronarium Primrose Gem Seeds Ref: TM01407582 SowingSow in early spring 1.5mm (1/16in) deep in any good seed compost. Make sure that the compost is moist but not wet and seal in a polythene bag until after germination which usually takes 10-18 days at 18-21C (65-70F). Seed can also be sown outdoors in mid spring 6mm (¼in) deep where they are to flower and thinned out.GrowingTransplant when large enough to handle into boxes and grow on in cooler conditions. Gradually acclimatise to outdoor conditions for 10-15 days before planting out after all risk of frost, 30cm (12in) apart in a sunny spot on light well drained soil.Aftercare FloweringSummercroppingPlant typeHardy Annual Price: £1.27 Quantity: