Rosemary is a versatile culinary seasoning for many vegetable or meat dishes. Medicinal: Rosemary has diverse medicinal properties, the most notable being its use as a circulatory and nervine stimulant. Extracts of rosemary have strong antioxidant and preservative properties. Packet (0.07 g) 58 seeds. Growing instructions: Perennial in zones 7-10. Germination: 55°F night, 70°F day, light required. Transplant. Full sun. 14-48 in. tall. Requires a well-drained, alkaline soil. Sow seed in a sterile seed starting mix with limestone added. Germination is normally low and growth of seedlings is slow. Rosemarinus officinalis.