Who put this disgusting black scab on the bottom of my beautiful tomato? Blossom end rot is caused by two things: a lack of calcium and inconsistent watering. However, you can still save the plant and any remaining tomatoes it produces. Put all rotten tomatoes in your compost and cut your losses. Those tomatoes need some calcium at the root—stat.
Blossom End Rot on Tomatoes, Eggplants, and Peppers
Hi, my tomatoes have developed rot at the bottom of the fruit. My other plants appear to be okay. Can you please advise how to stop it affecting my tomatoes? The problem is blossom end rot which commonly affects tomatoes, capsicums and courgettes. It is not a disease but a physiological disorder and can't be spread from plant to plant or from fruit to fruit.
As tomatoes reach the half-grown stage, the fruits that may seem fine otherwise can begin to develop hardened brownish areas along the bottom. This symptom, which can also occur on related members of the nightshade family, such as peppers and eggplants , is usually a condition known as blossom end rot BER. Despite the name, blossom end rot is not a bacterial rot, nor is it a disease.
The affected tissue breaks down rapidly and the area becomes sunken, dark brown or black, and leathery. This can happen at any time as the tomatoes mature, and most often on the first tomatoes of the season. Blossom-end rot is caused by insufficient calcium in the tissue of the tomato.