What happens next?

How to grow oca
Sprout your oca tubers before planting them.
Like potatoes, oca is most often grown from last season's tubers. These seed tubers can be held back from your own crop or purchased at a garden store.
Place the tubers on a tray where they will receive direct sunlight and the temperature is somewhere between 60 and 70 f (16 and 21 c). Leave tubers on the sprouting tray 1 to 2 weeks.