On a whim, I planted a sweet potato that had sprouted and it took off
running (some vines are about 8-10' long). I see several tubers near the
original hole, but I don't know when I should really dig around and see if
there's anything worth eating - after frost? Will they all be right around
the main stem? At least it's a pretty vine that filled in some blank areas
in a new perennial bed.

Beth