Lunaria annua

Common honesty, Lunaria annua, is an old-fashioned dual-purpose plant, grown partly for its fragrant purple or white flowers in spring and early summer, but also for its unique oval and translucent seedheads, popular with dried-flower arrangers. It's properly grown as a biennial, and makes large, well-branched plants in its second year, after which it will seed itself freely around the garden. However, smaller plants can be grown as hardy annuals from an early sowing, with a smaller flower display, but very good compact seed-heads.

Grow Lunaria annua in moist but well-drained soil in partial shade. Allow plants to self-seed and let the seedheads stand to add winter interest.