I wonder whether C. cashmiriana sets pure seed in cultivation or even at all much? I've never seen seed either on my own (which I've had since 1965!) or advertised anywhere or in a seed exchange. It is not entirely infertile because it has hybridised with C. flexuosa or elata on a couple of occasions (not for me) and one of these hybrids is sometimes available from a NZ nursery (Hokonui Alpines). I think C. cashmiriana was the seed parent so to that extent it sets seed but maybe not with its own pollen.
Have there been new collections of this species since the original way back in whatever year that was?
