Allium macranthum Dark Form

Haunting rich purple flowered form of a rarely offered nodding onion from moist woodlands of East Asia.  It's also one of the latest blooming alliums -- typically in late summer and early fall.

Deep 3.5-inch pots.  Zone 5.  Photo:  Jenny Wainwright-Klein, https://nargs.org/photo/allium-macranthum

Part shade; moist humus-rich soil; 18x12"; late summer to fall