Summer-long flowering annual. Height 35-40cm (14-15″).
Sowing: Sow seeds on the surface of the soil. If starting indoors, use a sterilized seed starting mix and maintain a soil temperature of 12-21°C (55-70°F) under bright lights. They should sprout in 5-14 days. Start indoors 6-8 weeks before the last frost or direct sow while some danger of light frost still exists.