Gr.Peppers not ripening

[Chiefs Mess]

I know some people were having problems with tomatoes ripening (me too) But my gr. peppers are getting a lot of blooms then that is it. No gr. pepper forming....Why?
I was and starting again having problems with the bottom leaves yellow/withered so I spray them with a copper sulfate(something like that don't have the bottle to read)
which did the trick.
Any other suggestions what is going on?
I live in zone 7-central VA
TIA

:tools

 

[Grow 4 Food]

1 tablespoon of epson salt to a gallon of water and spray down your pepper plants. Next - quit fertilizing your pepper plants -.

Your soil is to "sweet" for the peppers, they like it a little rotten.

Next year when you plant them take the heads off of 5 wood matches and put them in the bottom of the hole and set your plant on top of them. Plant the pepper and stick all the match sticks in the ground around the base of the plant (about 3 inches away). EASY on the Miracle grow and fertilizer and keep them fairly dry.