I've been nursing Hedychium gardnerianum along for 3 to 4 years and had blooms for the first time this September. I had Hedychium 15 years ago for a few years - they bloomed if they wintered indoors and gradually disappeared when I left them in a south facing area that was too dry. I left this batch outside in a west-facing fenced site one winter and they languished the next year. After they were dug and over-wintered in a 10°c garage they took all summer to get growing again and stayed spindly. Last winter they lived in the house, not cut down but apparently dormant, in pots in a sunny south window. They've spent the growing season in-ground in a south-east alcove, backed with a stone wall a couple of feet away. With weeper hoses and fertilization from time to time there's been good expansion of the rhizomes this year and 3 blooms, the last struggling to open over the past 2 weeks. I'd rather they stayed outside in-ground this winter, but I don't want to lose them. Ag.Canada's postal code mapping puts me in zone 8b. How best to manage them? Last February seemed unusually cold for quite a while here. Also, I've heard that the rhizome size is key to flowering. Can anyone comment on that? These have taken such a long time to bloom; I bought them commercially in 1 gallon pots, so they were probably quite small.