Edimentals, Onions, Perennials Allium cernuum “Dark Scape” July 27, 2015 Stephen Barstow Leave a comment There are many great edimental forms of Allium cernuum / Nodding onion or Chicago onion. I call this one “Dark Scape” because of the dark flower shoot / scape. Bees love it too… Optimized print or PDF