Image by Thomas Kriese
By Heather Rhoades
There are many theories and suggestions that float around the world of gardening. One of them is that pruning pepper plants will help to improve the yield on peppers. You may be wondering if pruning bell peppers in your garden can help your peppers give you more fruit. The answer to this is not a simple one. Let’s look at the idea of pruning bell peppers and see if it is sound.
Two kinds of pepper plant pruning
First of all, we should make it clear that there are 2 ways for pruning bell peppers. The first way for pruning pepper plants is early season pruning and the second is late season pruning. We will look at the benefits of both of these.
Early season pepper plant pruning
When it comes to bell peppers, pruning at the beginning of the season, before the plant has set fruit, is suppose to help increase yield. The theory goes that the increased air circulation and better access of sunlight to the deeper parts of the plant will help it to grow more peppers.
In university studies, this kind of bell peppers pruning actually slightly decreased the number of fruits on the plant. So, the theory that doing this will increase the number of fruits is false.
That being said, the studies did find that if you prune peppers early in the season, the quality of the fruit was improved. So, pepper plant pruning is a trade off. You get slightly fewer fruit but those fruit will be bigger.
How to prune peppers early in the season
Early season pepper plant pruning should not be done until the plant is at least a foot tall and can stop once fruit have set. Most pepper plants have an overall Y shape and branches then create smaller and smaller Ys off of the main stems. By the time the plant is a foot tall, you will be able to see the strongest branches on the plant. Cut back any smaller branches, including any suckers. Suckers are branches growing from the crook where 2 other branches form a Y.
Be careful not to damage the main Y of the plant as this is the backbone of the plant. Damaging it will cause the plant to perform poorly.
Late season pepper plant pruning
The main reason to prune peppers late in the season is too speed up maturing the fruit that are sill on the plant. Pruning bell peppers late in the season does help to speed up the ripening process because it focuses the plants energy on the remaining fruit.
How to prune peppers late in the season
A few weeks before first frost, trim back all the branches on the plant except for the branches that have fruit that have a chance of ripening before the end of the season. From the entire plant, carefully snip off the flowers and any fruit too small to have a chance to fully ripen before the frost. Pruning pepper plants this way will force the remaining energy in the plant to the remaining fruit.