Q.banana peppers
Banana peppers in a container have black/brownish spots on fruit, also yolks of branches are almost black.

Downtoearthdigs
Answered on August 18, 2015
This is generally caused by blossom end rot. Here is more information: https://www.gardeningknowhow.com/edible/vegetables/pepper/pepper-blossom-end-rot.htm
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