Colewort (Crambe cordifolia) Home › Forums › Flower-Garden Questions › Annuals and Perennials › Colewort (Crambe cordifolia) This topic contains 0 replies, has 1 voice, and was last updated by Anonymous 8 years ago. Viewing 1 post (of 1 total) Author Posts January 8, 2009 at 12:31 pm #28637 Anonymous This is a non-edible hostplant for the Cabbage White butterfly. "Under-utilized giant with beautiful architectural foliage" is how this is described by Butterfly Gardener journal. Has anyone ever grown this and where can I buy the seed? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.