I know there are a few readers of this blog growing Ulluco now.
Frank just left a very informative comment on the previous post. There’s more information in this comment than I’ve been able to find on the entire Internet to date.
So far I have several plants that are surviving, but I can’t say much more than that. Since I was expecting to hill them up like potatoes, I planted them in trenches. This means the ground is a little wetter than the rest of the garden, the plants are a little shaded by the sides of the trench (I dug them east-west), and so are staying a little cooler in this hot spell we are having.