Dear Jim: I was wondering the same thing. This summer, I found a website, http://www.tntuberoses.com/, that sells only Polianthes tuberosa. The curiosity for me is the nursery location. They are located in northern Tennessee, and the hardiness zone appears to be about the same as mine, 6b. Their photographs suggest they have a large field growing operation, and they provide cultural tips for growing outdoors. I guess I would find it hard to believe they would dig up fields of it every fall to avoid freeze damage, but maybe they would. Otherwise, maybe, with some mulching, it's hardy to zone 6? Boy, I really like the picture of the Manfreda cross. Mr. Kelly M. Irvin 10850 Hodge Ln Gravette, AR 72736 USA 479-787-9958 USDA Cold Hardiness Zone 6b mailto:firstname.lastname@example.org http://www.irvincentral.com/ James Waddick wrote: > Dear Dennis, Steve and all; > > I think subject of Manfreda x Polianthes hybrids is a > fascinating new topic, but it got me thinking.