· leaving 1 or 2 suckers along with the main stem of an heirloom will give you a strong plant, less susceptible to disease and a good amount of tomatoes. Read on to learn more. · explore the pros and cons of pruning suckers on tomato plants with this detailed guide. It will result in the healthiest tomato plant. · pruning suckers on these can reduce the number of tomatoes , so it’s usually best to leave them alone. Keep in mind, though, that if you remove all of the suckers , the plant will be more compact and yield fewer tomatoes throughout the season, but theyll typically be bigger fruits. And the plant will not grow more than the root system can support, especially if you bury your tomato plant deeply or sideways. It depends on the type of tomato plants you’re growing and how you’re supporting them. The first pruning should be done when your tomato seedlings are about 12–18 inches tall and have at least 5–7 sets of true leaves. In fact, pruning the suckers off of determinate tomatoes can actually reduce your harvest since you might be removing some of the few branches that will end up producing fruit. · resist the urge to pinch off that sucker and it will reward you with tomatoes. · if you let all the suckers grow, your plants will become heavy and out of control. · should you remove tomato plant suckers ?