Summer/fall bloomFrost tender
Sow seeds in well-worked soil in full sun when danger of frost is past and weather is warm and above 50°F (10°C) both day and night. Space seeds 2 to 3 inches apart in rows 12 inches apart, cover about 1/2 inch deep and gently firm soil. Keep soil evenly moist while awaiting germination.
Four weeks before last frost date, sow seeds 1/2 inch deep and 3 inches apart in a container of seed starting mix. Keep warm and moist and provide a strong light source until seedlings are ready to plant outside when temperatures rise above 50°F (10°C) day and night.
Space seedlings 8 to 10 inches apart when large enough to handle in order to give plants room to mature and provide good air circulation.