I am in Zone 9 and my experience has been similar on which tulips will persist... As far as creating warm weather tulip hybrids, I have only found seeds on the various forms of T. clusiana. In fact I did sow a pod full this winter and have had excellent germination. Each seedling is a long thread and still has the seed husk attached at the tip (months later) - I guess this is normal, but I have not seen this before. Anyway I would be interested if anyone has had viable seeds on other warm weather happy tulips... Chad PLEASE NOTE: The information contained in this electronic mail message is intended only for the use of the designated recipient(s) named above. If the reader of this message is not the intended recipient, you are hereby notified that you have received this message in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify the sender by telephone or e-mail (as shown above) immediately and destroy any and all copies of this message in your possession (whether hard copies or electronically stored copies).