To help your tomato plants in developing a better root system, you should plant them deeper into the soil. If your tomato plant comes in a pot, you should bury them deeper into the soil by digging a deep hole.
Just like any other gardening methods for vegetables, watering plays an important role. If you water your tomato plants inconsistently, the blossom end may start to dry off and rot.


However, when your tomato plants are nearing their harvest season, you should reduce the amount of watering so that the harvested tomatoes will be sweeter as they concentrate their sugar in the fruits. Watering too much at this stage may cause the fruits to drop way before they are ripe.