This photo was taken 8/4/08. The sweet potato plant is on the right in the silver wash tub.
I forgot to take a pic of the plant before starting to pull, so I tossed the plant back up and took one. I gently pulled up the potatoes I could, then used a hand trowel to loosen the soil before pulling the others out by hand.
I had already taken two nice sized sweet potatoes out, but the harvest is smaller than last year. I had 3 vines in the tub this year. I can't remember how many I put in last year, so maybe that was the difference. I'll probably go ahead and plant more next year, though, because all you have to do is water them. They don't require attention planted this way.