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Thanks to all who suggested "blossom end rot" to be the problem. Lack of calcium looks to be the culprit. Quite inadvertently the plants were being watered with a water source that was conditioned to remove lime. Anyway, I now know what I have to do correct it. Unfortunately too late for the more matured fruit.
Thanks, all.
You'll still get more tomatoes. I got this last year, sprayed the leaves of the plants with a water/calcium chloride mix several times, spread out over a month, and got plenty of good tomatoes afterwards...
I'm growing tomatoes in one of the new upside down pots. But they seem to be rotting when they get a decent size. Am I over watering them? I'm trying to keep them moist at all times. The pots hold alot of soil, and I test for moisture with a tool. But the roots are on the bottom of the pot. Any ideas?
Could be any number of things. Have you gotten a lot of rain lately? Then it could possibly be Black Mold caused by the moisture.
Hi Alleycat,
I am having the same problem with my tomatoes. I have dozens of tomatoes, but i have already 8 that were rotten on the bottom. The plants look droopy, so i water them more often. What can be done about this problem or was it caused from too much rain?
Using egg shells can't guarantee BER isn't a problem. You can have more than enough calcium in the soil but if the water conditions aren't right the plants can't take up the calcium. Control the water - not too much, not too little, and you'll probably avoid BER.
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