This year is the first year I have really had tomatoes, actually, in a long time. I have 4, all planted in the largest pots I can find (one is in a wheeled garbage can that rats put a hole in years ago). I have a mulberry tree that inconveniently drops leaves on my driveway at the worst times of the year and then they rot. But they make great top soil! This year I shoveled it all up and mixed it in with dirt already in the pots and with dirt and leaves from the dog kennel that collected during the winter. So far, so good, but now it is hot. The garbage can has wheels so I can move it and the others are on plant dollys, so I can move them. But still going to be hot. One thing about my sandy soil though, I don't have any snails and very few worms.