There are several reasons you may prune peppers. One reason is to develop stronger sturdier stems. This helps plants manage high wind areas and better support heavy crops of peppers. Removing the main growing tip will also create more side-shoot growth in 98% of pepper varieties. I found a few that don't seem to like pruning like 'Banana' peppers. This will create a bushier plant that will branch out and flower more. The more flowers, the greater the yield of peppers.
Pruning ultimately lets you make a stronger plant that produces more. I will be doing an ongoing series based on the peppers I am pruning. I will be using control groups when available. Here is what my original pruned peppers look like, about 1 month later after their initial pruning. They are compared to un-pruned peppers of the same variety.
Here is the original pruning video if you would like to see how it is done. Pruning can be done many many many ways. This is just one way that I prefer.
If you are growing peppers indoors it is important to know when to transplant them outdoors or into larger cups/pots. Peppers really like warmth and should go out in the garden when the temperatures no longer get below 50 degrees F. If they are in cups, transplant them when they look like this...
Good Luck with Your Garden, Gary (The Rusted Garden)
Join My Google+ Community Our Tomato and Vegetable Gardens (5000+ Members!)
400+ HD Short and to Point Garden Videos: My YouTube Video Gardening Channel
Follow and Organize The Rusted Garden on Pinterest