Vegetables need calcium for healthy development. When tomatoes, peppers, melons, and eggplant can’t get enough from the soil, the tissues on the blossom end of the fruit break down. … Another reason is that too much fertilizer causes the plant to grow so fast that the calcium can’t move into the plant quickly enough.

How do you add calcium to tomatoes?

Make homemade calcium for plants by mixing the shell meal or crushed eggshells directly into the soil about 6 or 7 inches deep before you plant your tomatoes. You can also add eggshells or shell meal to the soil around your tomato plants after planting to help maintain a steady calcium level during the growing season.

How much calcium does tomatoes need?

Calcium is required in relatively large amounts. In total around 152lb/ac of calcium is taken up by a filed tomato crop yielding around 44.6t/ac.