Doesn’t sound very appetizing, does it? That’s because you don’t necessarily eat eggs with tomatoes, you put the eggshells in and on the ground when you plant tomatoes. If you do, you’ll grow more and larger tomatoes and eliminate or reduce those black spots on the first fruits.
I didn’t do well in chemistry, but I know that calcium, especially calcium carbonate, is a great additive to the soil. Calcium is vital to plant growth and promotes root growth. Egg shells are packed with the calcium, which lowers the pH level in the soil, making it more alkaline and plant-friendly and less acidic, especially helpful to tomatoes, peppers, broccoli, and spinach, to name a few.
Sprinkle some crushed eggshells around the plants at their base and underground, and those black spots (blossom end rot) will go away. Southern Living suggests making Egg Shell Water to nourish your plants. It’s simple. Boil one gallon of water, add 10 cleaned and dry eggshells, allow the shells to soak overnight, then strain them from the water. Eggshell water can also be stored in a closed container at room temperature for later use. Regular applications will keep your plants happy as clams. I now have about 4 dozen crushed eggshells and I’m hoping to have a bumper crop of peppers and tomatoes because of them.