How do you prune tomato plants?

Before making any cut on the plant, it is important to know what variety is being grown and then it is important to observe any yellow leaves on the plant. If the plants contain yellow leaves, then it is considered to be the right time to start pruning. The suckers on the plants, i.e., tiny new branches that sprout at the junction of stem and old branch should also be removed. Another indication for pruning is when the plant starts flowering.