Green Pepper Plants
Green pepper plants blossom beautifully but entire stem will fall with blossom. Noticed where stem attaches to branch the connection site is black as well.
Certified GKH Gardening Expert
Bell peppers often have a purple-black coloration at points where stems meet, but if the black color is a solid black and the area is shriveled, this would indicate the black are is the issue. Here is more info: https://www.gardeningknowhow.com/edible/vegetables/pepper/black-stems-on-pepper-plants.htm There are two things that I could think of that could be causing the issue. The first would be rodent activity. Small rodents will try to eat the blossoms and their tugging on the plant to get to the blossoms may pull the stem off. The other is a condition called stem scald, but it normally happens on the main stem. What happens is a heat source can focus heat on a part of the stem and it wilts. It is known to happen when plastic is used and it focuses the heat onto a part of the stem.