An update post-harvest... I actually got more sweet potatoes from the plants in containers than from those in the ground. I don't know how much of that was due to weather (we had a very dry summer last year) or other factors, but I'll definitely be growing them in containers next year instead of in the ground - the harvest is much easier too.
I knew the leaves were edible, but actually went all season without tasting them. I should try a stir-fry next year
