In m "Darlington" writes:

Tiny buds just sit there. When
flowers do open, they close in a few days, turn brown to the stem, and the
entire thing falls off.

If your nighttime temperatures are too cold (less than 65), or daytime
temperatures are too hot (above 90), peppers will drop their flowers.
This can also happen if the plants have a magnesium deficiency. You can
try spraying the blooms with Epsom salts if that's the case.

Regards,
Greg
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