Jayfar, quick question, does the Shutennou have pink/red/plum -ish root tips? (this is one I've had my eye one ) Or are they green?
Any of my others I could tell you, but on the Shutennou I don't have any good exposed tips right now; I dug one out and it looks just a bit pink at the very tip. Another reference I googled claimed dark burgundy. Botany Boy's site shows ruby red in a photo.