Hallo Gingerlovers

I have a question. In my greenhouse is now flowering the Etlingera elatior,the red one. what a beauty. I love this one so much, that I am searching now other colours. There is a White and Pink flowering one. Perhaps also other ones , that I do not know.

There are also other species, very nice ones, such as venusta, coccinea etc.

Can some one help me with seeds, or a little rhizome?

Or does some one know where I can get/buy these Etlingera's?

Thank you very much.