Summer/fall bloomFrost hardyUSDA Zones 4 to 9
In spring, about 6 weeks before last expected frost date, sow seeds 1 inch apart in a containers of seed starting mix. Cover very lightly with mix, keep warm and moist, and provide a strong light source until seedlings are ready to plant out. Feed every 2 weeks with half strength fertilizer. Once seedlings are large enough to handle, transplant 2 to 3 inches apart into deeper containers or individual pots so root systems have room to develop. When plants are 3 to 4 inches tall, gradually acclimate to outdoor conditions. Plant out in the garden in full sun in well-drained, good soil 12 to 18 inches apart. Protect seedlings from slugs and snails while plants are young.