Using a quality, moist seed compost, sow your seeds 3mm (1⁄8") deep in seed trays and place on a windowsill or in a greenhouse at about 16°C (61°F) to germinate (usually 14-21 days). Transfer seedlings when large enough to handle into seed trays spacing them 5cm (2") apart, and grow on. Acclimatise to outside conditions before planting. Alternatively, sow seeds directly outside in May-June. Choose a sunny/partial shaded position.