Not too good a winter so far with a mix of young and old Heli collapsing quickly over night. Lost my two H. purpurascens, a younger H. exappendiculata went today. And a couple of H. hispida & H. pulchella a week or so back. With more to follow I expect!
Typical symtoms are of pitcher growth going soft and limp very quickly. No recovery and rhizome brown and dead on inspection. Roots healthy and intact. All plants dosed with Trichoderma atroviride and watered with RO and clean rain water. Some plants under lights indoors, others in the greenhouse with reduced natural light. Temps from 45 to 60f.
I so far have only had sudden death in winter and so the suggestion of too hot a temperature bringing it on does not apply. So far the winter here has been quite benign with the worse yet to come I fear!
With no obvious cause cannot do anything to help the rest apart from treat them as I always have. Won't bother replacing the losses- too expensive.