Tomato Pepper and Eggplant

How can I prevent blossom end rot?

Blossom end rot is a calcium deficiency normally induced by uneven water availability. Sample your soil and have it tested for calcium levels and pH. Adequate calcium in the soil does not prevent blossom end rot, but inadequate levels will help cause it. Always maintain an even level of moisture in the soil, especially when the plant starts blooming. Moisture stress severe enough to wilt plants will guarantee blossom end rot on the fruit. Once a fruit develops blossom end rot, there is no cure and the fruit should be removed.