Antirrhinum majus High performing hybrid seed. For greenhouse or field production. Bred for the long, warm days of summer. Grow for bouquets. Full sun to Partial shade Matures in 100 days The high performing Potomac snapdragon series was selected for stem and flower quality for production during long summer days. Tall, strong stems have long, refined spikes of ivory white flowers. 80-120cm (32-48") tall plants can be grown in the field and garden, or in a greenhouse. Approx. 25 Seeds Start snapdragons indoors, 8-10 weeks before planting out. Transplant out after last frost. Direct sowing is less reliable. Provide bright light and a soil temperature of 12°C (55°F). Seeds should sprout in 10-21 days. Sow on the surface of a sterilized seed starting mix. To avoid damping off (to which snapdragons are somewhat prone), increase ventilation, use a layer of vermiculite on top of the soil, and water only from below. Transplant out once daytime temperatures are consistently above 10°C (50°F) and space 30cm (12″) apart.