Q.How To Grow Sweet Red Bell Pepper
I’ve tried twice now in a 3′ x 54′ container garden but they never gew bigger than a gold ball and were green in color
Certified GKH Gardening Expert
To get the red color, you have to leave them on the vine till they change from green to red. I'm wondering if they would do better in a smaller container. If your container is not full of other veggies, the peppers may be getting too much water.
They need sun, fertilizer, and moist soil. Here is how to grow them:
https://www.gardeningknowhow.com/edible/vegetables/pepper/how-to-grow-red-peppers.htm
https://www.gardeningknowhow.com/edible/vegetables/pepper/harvesting-peppers.htm