Barbarea

Barbarea - Mountain and marsh cruciferous herbs of the Old World, few of much garden value, only two varieties being worth growing. The finest is the double yellow Rocket (B. vulgaris fl.-pl.), which is a beautiful and curious plant. It is about 18 inches high, flowers bright yellow, from June till late summer, and often till autumn. It succeeds in almost any soil, preferring a rich, light loam. Division.