Hi Steve. I THINK the only forum that generates email alerts is the "Ask a Question" forum. Others show up in your Thread Watcher automatically if you start it or respond to it.
The general guidance is one tomato plant per five-gallon container. I've found that to be the minimum effective size. In my experience, by maturity the roots so completely fill the container that it needs daily watering. Here, at the height of a heat wave I watered twice a day. Feeding is critical.
I'm always experimenting, so this year I'm trying two plants per 8.5 - 9 gallon pots and more frequent feeding. Mixed results so far suggest they are too crowded. My one known (to me) indeterminate cherry is producing, but the fruit is puny.
If I had the room I would much prefer to grow in the ground.
PS: gratified to read your reference to the breaker stage. I remember last year's conversation.
