Bob - Nice Pics!! Thanks for all the info! You are filling in a lot of holes and really helping.
WRT sun - guess they will handle more sun than I thought. Perhaps I can find some better locations next year, but mine seemed to do pretty good on my screened in porch where the screen provided some filtering. Otherwise, the were receiving light from 9 - 4. It is on the South side.
Earlier you said that you keep them over winter in a cool greenhouse. This is heated but you keep it at 50? I have a small "pretend" GH that I use from mid April - early November. The rest of the time it is freezing in there.
Couple other questions.
How often do you divide and repot?
Have you ever tried grocery store ginger? Mine is doing quite well, but nearly as good of my two ornamentals.
Cheers