Ours never did well in any kind of containers. It might just have been too wet last year or maybe I started off too low down the container and they didn't get enough light. I'll try the car tyres this year, pumpkins and squashes are supposed to do well in them, too. Tatties were brilliant , even left in the ground until now. They're enormous, didn't suffer from the frost at all, just some areas in the garden seem to be more prone to slugs (first time I've seen them INSIDE potatoes). I wouldn't grow them in Hessian Sacks, but use those for storage instead.