Reader Tips: 12 Tips for Growing Perfect Tomatoes. I put a 1/3 cup of bone meal, 1/3 of part tomato fertilizer, 1/3 cup of part lime in each plant hole with crushed egg shells and 1/3 cup of worm compost.
Baking Soda Spray for Tomatoes. AND Tomatoes need calcium to achieve their full flavour 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.