In one of the threads here, I mentioned that I had grown potatoes in yard leaf bags, largely because our soil isn't deep enough for us to grow anything, particularly root vegetables, in the ground. I have done this a few years and it has always been very successful, as well as easy to harvest. I piled the bricks around it mostly to keep my cat from tearing the bags apart. The first year I did it, I didn't have any young cats who were prone to to that, and the bags themselves would hold up long enough to bring the potatoes into harvest time. Somewhere, I have photos of the pile of potatoes that I harvested from just one of these bags but I couldn't find them when I was looking through my iPhoto album yesterday. I'll post them when I come across them, but here's some of the plants from a couple of years ago. I grew others on the south side of my yard, and they did well too.