We tried the Topsy Turvey way of growing a tomato plant and a bell pepper plant this year. The tomatoes are not getting very big, although bigger than cherry and grape tomatoes. However, they are turning brown on the bottom. The bell pepper is taking a long time to grow. What is causing the brown on the tomatoes, and how long should it take for the bell peppers?
Upside Down Growing
Certified GKH Gardening Expert
For the tomatoes, it is blossom end rot. This article will help you with that: https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-blossom-rot.htm
As far as the peppers go, they are finicky and slow sometimes. As long as it is healthy, it will eventually make fruit.