Crocus sieberi Hubert Edelsten has not set seed for me either in the garden or under glass. It does increase slowly both in the garden and in pots. Generally I would not expect horticultural clones to set seed (they are cheaply available due to their rate of vegetative increase) although as this plant arose in E A Bowles garden as a seedling it might set seed. Equally as it is supposed to be a hybrid it would be unlikely to breed true - so you don't win either way! Grown under glass its parent Crocus sieberi ssp sieberi does set seed in the UK. This plant is very variable in its outer markings, white with dark purple in a variety of patterns. Several examples are shown on the relevant page of Crocus Pages. Many thanks to the contributors to this topic. One of my aims as a NCCPG (National Council for the Conservation of Plants and Gardens) Collection Holder is to educate people about Crocus - I have also learned about cultivation in parts of the US through our discussions. Thank You. I am always happy to answer private enquiries by email and equally happy to hear from you if you think you know something I don't! Tony Goode. Norwich UK