I have another post describing all the volunteer potato plants I have this year. If you haven't found it, take a look here: http://2atthefarm.blogspot.com/2011/06/frugal-gardening-and-potato-tale.html
I still have potato plants in the beets and green beans. This morning I decided to dig a couple plants up to give the beets a bit more sun and give me a little more walking room. The potato plants were far from dying, indicating that it's time to get to digging. I figured I'd have just a few small spuds. Wow, was I surprised. Yes, there were plenty of little potatoes, some dinky potatoes and several good sized ones, too! I tried to weigh them to see what the actual yield was. Lacking kitchen scales, I tried the bathroom scales. Not the best thing to use as I had a hard time seeing the dial thingy through all the potatoes, but I think I got about 6 pounds. Not bad for volunteers which equals free! (I'm so easily excited sometimes!)
I'm going to plant all the little ones from my entire potato crop in the area where I want next year's crop. Maybe I'll never have to buy another potato! Seed or otherwise.
In the meantime, it's fried potatoes and eggs for supper tonight, all from our little farmette!