Impatiens require great care, particularly in the early stages, to get the best from the seed. Modern F1 hybrids are produced to yield 90-100% germination given favourable conditions during raising. Sow January-March. For first 5 days: 22-24oC, cover seed with vermiculite but do not exclude light, make sure well watered, low nutrient compost pH 6.2-6.8. For following 10 days, 22-24oC, medium moisture, ideally provide supplementary light above seedlings, give one weak strength feed. For following 10 days, reduce temperature to 20-22oC, one moderate strength feed. For next 7 days, temperature now 17-18oC, one moderate strength feed. At the end of this stage, strong seedlings should be ready for planting on into packs/pots as required. Impatiens Walleriana F1 Accent Star Mixed Seeds
