Sow indoors to flower the same year, 0-5cm (¼in) deep, in a tray of compost. Water well and place in a greenhouse or on a warm kitchen windowsill. A temperature of 15-20°C (60-68°F) is ideal. Keep moist. Seedlings usually appear in 21-35 days. Transplant seedlings 5cm (2in) apart to other trays when large enough to handle. (Always hold seedlings by a leaf, never by the stem.) Gradually accustom young plants to outside conditions (avoid frosts) before planting out 25cm (1in) apart when frosts are over.
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