I tried growing ginger from rhisomes I bought in the store. They were labeled organic. I planted them as suggested and they were only reported to grow 3-4 ft tall. Mine grew to at least 5 feet or more, til I finally cut them back to about 2-1/2 feet. i've used a few 'thumbs' of it, but most of it seems to have spent its energy in the plant instead of producing an endless supply of ginger.