I didn't mean to imply that Cyclamen coum usually rots for me. It was just that one plant that bloomed so long in the past that died. I actually have C. coum coming up all over the garden. The most surprising one in growing in a very deep pot in a raised bed with a Brunsvigia where it gets full sun and has been blooming reliably for a long time in winter for several years even though the Brunsvigia has yet to bloom. I'm don't think C. purpurascens is as happy here as the other species. I only was successful in germinating two from a batch of seed and several years they have developed spider mites. I water them in summer, but expose them to the elements in winter so I don't think it's excessive water in winter that does them in. I expect they would get too dry in summer in my garden. I repotted them last year mid summer and they responded well to that. I think it helped with the spider mite infestation to start over with new soil. I've not had much success with C. rohlfsianum, but I have a number of Cyclamen persicum that I expect to be blooming size this year. Mary Sue