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. Theyll provide calcium and prevent blossom end rot.
Video ~ Making your own potting soil is quick and easy. You'll not only save money, but you'll end up with a higher quality product than what you can buy at the store. Not to mention you'll know exactly what's in it - no chemical fertilizers, fillers and other things you don't want to be growing vegetables in.