Prune tomato plants to focus energy on fruit production rather than foliage growth.
Home gardens are fun for growing tomatoes. In the sun, they produce an unlimited supply of fruit till frost.
Pruning is not necessary for determinate (bush-type) tomatoes. Leave it wild. Indeterminate varieties (vine-types) are "yes". After four weeks, the tomato will reveal its kind
The New Organic Grower by Eliot Coleman taught me how to prune tomatoes: “Prune to a single stem and eliminate side branches every several days
the first two clusters should be cut to three fruits and four fruits thereafter.”
caged indeterminate tomatoes grow badly. By the end of the season, the vines dangle over the cage and stress under the weight of the fruit, breaking.