They are subject to many stories and legends and have a long garden history known as Gilliflowers of old English. They are perennials usually grown as biennials. Erysimums are very similar plants from Afghanistan and Pakistan. They are fast-growing and flower the first year in late summer in fine shades of old gold and orange. May. They often survive the winter and flower in early summer the following year.
Wallflowers attract bees and butterflies to the garden.