Dear Makiko, I have grown Wasabi here in Kansas City with little trouble. I certainly do not have running water- barely have water. I followed guidance from a UK grower and have my plants in a gritty-mostly gravel mix sitting in shallow saucer. I water them regularly until the saucer fills. Stays in almost full shade year round and winters in a cool/frost free greenhouse. Drop me a note if you want more info. Best Jim On Feb 27, 2016, at 4:10 PM, Makiko Goto-Widerman <makikogotowiderman@me.com> wrote: Do you grow Wasabi plant? You have a running creek in your back yard? Just curious. Makiko