Picture of orange 'Lucifer' Crocosmia flower, a plant similar to gladiolus. Grow Crocosmia flowers (formerly called "Montbretia") in full sun to part shade, in a well-drained soil. Crocosmia's foliage resembles that of iris, while its flowers remind one of freesia. Crocosmia is propagated via corms. Dig up the corms in autumn and store them away for winter. Don't allow Crocosmia corms to dry out completely. 'Lucifer' Crocosmia reaches a height of about 3' and can be grown in zones 5-9.