The 3 main reasons why plants leaves turn black are overwatering, disease or too much fertilizer. If it happened overnight it isn't disease. Extreme humidity can also be a factor. What plants are affected? And can you show more pictures and what was the exact time frame for it all?i had beautiful luscious veggies yesterday.i woke up this morning and they were all black and crispy.what happened? Does anyone have a clue.
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