I used to grow a dozen or more tomato plants, so much that I would turn the excess into sauce and freeze it. One year I had so much I was running out of freezer space. But in recent years my garden area has been flooding easily. So I've been growing my tomatoes in containers. I planted about a month ago and so far it's looking pretty good.
Here is one container, it's a plastic bag on a stand, it has 3 ports for tomatoes and 3 for herbs. There is so much foliage you can barely see the container.
And it is sporting tomatoes on the vines already.
I also have 2 containers like this. Each one can hold up to 2 plants. It's a self watering system, you put water in the bottom of the tub and it has a tray that the soil sits on and it wicks up the water.
I also planted 2 tomatoes in the ground. Unfortunately they are drowning from the light flooding from last week's rain. I knew those were a crap shoot, as long my containers work out I'll be a happy camper with 7 tomato plants.