Sounds like the plant's growth cycle worked as it was supposed to do. Ginger leaves usually dry up after 8-10 months, so it's within the range - maybe a little shorter.
I'd just propagate using the same root cuttings technique you probably used for these initial plants. With any luck, this winter will be less brutal than last year's and you'll be able to get 1 extra month of growth in your greenhouse.
Try this link
here
Also, Adrian Adrien Adrien
