In fact it is essential to the forming and holding together of plant cells. In the early stages it just shows as a discoloration at the end, but as the fruit ripens it shrinks and looks quite awful. Calcium is a very important component to healthy plant and fruit growth. In other words, if you sprinkled calcium powder around the plant, that would not fix the problem. What causes blossom end rot? Tomato plants do suffer from many parasitic diseases, but in this case the disease is a physiological one, meaning that one or more of the environmental factors regarding the plant are causing the inadequate function of the plant. When flowers are forming into fruit, this point is the furthest away from the calcium supply and therefore the last area to be serviced, meaning that the cell growth at that point cannot be maintained as it needs to be. The damage has occurred weeks before and there is little you can do about it in the final stage. One cause is the one you most likely won't be able to do anything about if you are growing tomatoes outside, and that is hot windy weather that dries the leaves and slows down the travel of calcium to the fruit formation area.

If you have this problem then look at your soil and your watering as they are common problems with calcium uptake. Although we have discussed the lack of calcium, it needs to be understood that it is not the lack of calcium as such. Sometimes it could be lack of calcium in the soil but that is not necessarily the case. The appearance of blossom end rot. It was the tomatoes in that section that were affected with the blossom end rot. It is the absorption of calcium throughout the plant and into the cells that prevents, or stops further blossom end rot. What often happens is that where the damaged skin is, there is a secondary mould which may grow and those who do not know the difference, think that the mould is actually the cause of the problem, but not so.Blossom end rot is such a disappointing situation to have with your tomatoes because you don't even know your tomatoes have it until they are at the picking stage. What is so disappointing about this is that you do not find out the state of your tomatoes until they have started to color, just as you are getting excited about being able to pick your lovely home grown tomatoes.

The answer would obviously be to protect the plant from hot dry winds. The first ripening tomatoes were alright and the ones further up the plant were alright so I have to come to the conclusion it was the terrible weather that cause my problem. What happens is that in an area where cell growth is very rapid, as in the forming of fruit, there is an inadequate supply of calcium because of the distance of the source, thereby causing the death of cells and the breakdown of plant tissues. Blossom end rot does occur in other fruit types as well, such as watermelon and capsicums. The actual fact of blossom end rot is bucket mould Manufacturers that it is a disease that starts at the point where the blossom has dropped off the fruit. The cause of this disease is the supply of calcium to the developing fruit not being met by the plant itself.
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