Sow in a propagator on a windowsill or in a greenhouse at approximately 13-16°C (55-60°F) onto a good quality, finely sieved, firmed, moist compost. Do not exclude light or allow to dry out but avoid direct sunlight (germination 21-35 days). Transplant seedlings spaced out 5cm (2") apart and grow on. Acclimatise plants gradually before planting out 45cm (18") apart. Pre-chilling the seed in a fridge for one week may enhance germination.