My mom grew potatoes in a bucket type container and they did great. I thought she planted too many pieces in each bucket (I think she put 3 pieces, each with an eye or two), but she still got a yield. I tried leaf lettuce in a container, and it was a total flop. Have no idea what I did wrong except put radishes with it which also was a total flop. I did the lettuce thing because I saw at Lowe's they were selling what they called Salad Bowls and there was 3 different kinds of lettuce in the planter bowl. It looked great and healthy. Mine sure didn't.