I tried growing potatoes in a trash can this year and they did ok. I used some soil and some straw, and they only grew into the soil layer, so I won't do that again. My question is, should I top the plants? I knew I would need to wait till the tops died to harvest, but mine grew so tall they fell over and spilled out of the trash can (I built up the straw clear up to the rim of the can) well before they even grew flowers. I used grocery store Yukon golds that I chitted and dunked in wood ash, then left to dry and sprout.