Is there such a thing? Many ask, but those that know tomatoes, know "once up, best keep up"! The sucker i am pointing to, and all the others on the base of the plant can cause it to fall over. Great if you dont stake or you are really short. Just pinch or press sideways to break off. I like my larger plants tall so i break off all suckers till the plant is about 2 ft tall. It keeps the foliage away from the ground thus less bugs on plant, less moisture and more air to prevent leaf blight, and less hindrance of water spraying from my low irrigation heads.