I have been mixing used coffee grounds into the soil around my pepper plant and it seems to be dying, AM I DOING WRONG? It lasted three seasons without the coffee grounds.
Coffee grounds can be beneficial to your Pepper plants, but too much can lead to your plant having lots of leaves, but no peppers.
Aim for 1/2 inch of coffee grounds around the perimeter of the plant and work into the top soil. This amount should be sufficient for 2 months.
There can be other issues causing the plant stress.
The links below will help you pinpoint the problem.