(Cerinthe major purpurascens) - Cerinthe, featured at Sissinghurst Castle in England, is actually a native of the Greek Islands. This hard to find annual is decidedly a favorite in plant lovers’ circles. These fascinating and unusually-colored plants have indigo-violet bells rimmed in white that dangle gracefully from bronzy-blue bracts above rounded gray-green leaves. They make a show-stopping color accent in the garden or as cut flowers for indoor arrangements. Mature height 2-2.5 f..