Anybody who has considered starting a nursery might want to read an article in this weekend's edition of the Wall Street Journal: The Pot Business Suffers Growing Pains by Ana Campoy. If you scroll down the home page, you will see, in the right column, the Most Popular articles. Currently this is number one. It might be behind the pay firewall. I have a subscription. Not being at all familiar with this plant, I don't know whether it has a tuber, but thought people here might find this interesting. Leo Martin