Sow 8-10 weeks before the final spring frost. Sow in trays or pots, on to a fine compost, 1/8 inch deep, 1/2 inch apart. Water gently. Place plastic bag over seeds to keep warm and retain humidity. After germination remove cover and keep at 15C. Once seedlings have set their 3rd set of true leaves transplant to larger pots and grow on. Harden off before placing out 1 week after final frost. Water regularly.