I apologize for this delayed reply to your gardening question and hope it is still helpful to you.
If you can get the plants to cross pollinate you should be getting viable seeds. Otherwise you are left to do a division. However bulbs can be cut vertically into 4 sections and replanted as long as you get some of the basal plate on each section. Prior to planting store the cut bulb sections at about room temperature for a few days to give the cut edges a little time to start to dry and heal. Dusting them with a fungicide is another way to reduce loss from decay. This is drastic and a little risky but it does allow you to get more plants faster.
Thanks for the question. Best wishes for a wonderful gardening season. Please stop in again soon!
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