Honesty, Lunaria annua 'Chedglow' is a biennial with wonderful chocolate/burgundy leaves and lilac flowers. Honesty also has unique oval and translucent seedheads, which are great for dried-flower arrangements. It will self-seed and the seedheads add winter interest to the garden. 
▪️ Height 80cm
▪️ Width 40cm
▪️ Flowers in Summer and Autumn
▪️ Full sun to shade