Hi John,

It looks like some kind of Hedychium. I have tried Hedychium coronarium in the past and it was quite easy to grow. Currently I am trying Hedychium Dr. Moy, a variegated cultivar that has very late blooming season. So far I have not been able to make it bloom, but hopefully this late mini-heat wave will help it push out some flowers.

Daxin, Honestly I have no clue what you are doing. Email me a picture if you have.
I had three kinds of ginger plants in different colors from Hawaii before. But eventually I got rid of them. The fragrance was okay, but not fantastic. This Taiwan wild ginger, to my surprise, has a very unique and very appealing fargrance to me. My house area is getting pretty cool due to my back hill blocking the sunlight. Another merit is that in cool or even cold temperature, this flower produces equal amount of intense fragrance for a long period of time. I was going to get rid of them due to never flowering for about 5 years( root-bound or maturity might be requirement for bloom). Now It is part of my precious tresure in my garden. See more flowers are coming.

Here is a link that might be useful: