Sow Immortelle seeds outdoors after all danger of frost has passed, covering the seeds with 1 cm of soil, or sow indoors in individual pots, 6-8 weeks before the last frost date. Keep the seeds moist until germination. Harden off the seedlings by slowly introducing them to the outdoors over the span of a week, and then transplant them after the last frost date to 10″ apart in full sun and rich, well-draining soil. Immortelle seedlings resent transplanting. Handle the seedlings gently, disturbing the roots as little as possible. A dream in dried flower arrangements, Immortelle is an excellent everlasting. To dry flowers, harvest them just as they begin to open to retain their colors and hang them upside down in a dry, shady area for at least 2 weeks. Annual. Mid- to late summer flowering. Height: 12″ to 20″.