I know there are some gardeners out there that can help me out here. I'm not much of a gardener myself, but I bought 4 heirloom tomato plants this spring, and I've managed to keep them alive so far. They have lots of blossoms and a few little tomatoes now.

When I was a little kid, my father used to pick off some of the leave, so that the fruit would grow bigger. I'd like to try this, but I don't know how he judged which branches to prune off. Can somebody explain this to me.

Thanks,
Maryanne