Self made Miracle Grow. Put Epsom salts and sugar into each hole with your plant. It makes them grow larger, leafier and greener, use about 1 Tablespoon in a 1 to 1 ratio but I dont really measure it. You can also dissolve 1 Tablespoon into a gallon of water and use it to water your plants, trees, fruit trees, roses, flowering plants, squash,... all veggies. If you have already planted I would sprinkle around the plant and water it well
Tomatoes need calcium to achieve their full flavor potential, and calcium is often greatly lacking in our soils. 95% of a dry eggshell is calcium carbonate. When planting your tomato plants crush up (to powder) about 4 or 5 egg shells and put them in the bottom of the hole. Then plant your tomato on top. They'll provide calcium and prevent blossom end rot.