Last year I planted sweet potatoes and got one measly little spud. I suppose I planted too late. This year, I got them in the ground early, and they completely took over the garden. They grew up and over the trellises, across the paths and into the okra and pepper patches. They made the most beautiful purple blossoms. Just this week, the leaves have started to turn, and as I pulled out weeds from the ground around the vines, I…