Put a bag of Miracle Grow potting soil into a black garbage bag.
Poke holes all the way through both bags so water can get out.
Cut 2 or 3 holes in the top and plant your peppers.
Place them where they will get the most sun possible, and water them a little each day.
The sun will heat up tghe black plastic and make the roots put off more Capsaicin. I did this with some Jalapenos and Habaneros one year, and they were the hottest peppers I'd had for a long time.
Thanks for that tip. It sounds like a great idea. I have approximately 100 sq ft of raised beds that are too close to the walnut tree, so peppers and tomatoes won’t grow there and other stuff that is tolerant doesn’t do as well as it should.
I bet setting black bags along the fence row would work though, so it’s something to try.