You already know that plants need some space to grow properly.
Proper spacing allows them to grow without fighting for resources and competing.
Here are some general guidelines for spacing pepper plants in a garden bed.
Leave approximately 18 to 24 inches between rows, so they can grow freely.
This spacing allows for easy access to plants for maintenance things like watering, fertilizing, and harvesting.
You can move easily, and you can get access to do everything you need to make sure your plants are alright.
Space individual pepper plants within the rows around 12 to 18 inches apart.
This spacing provides enough room for each pepper plant to spread its branches, develop a strong and healthy root system, and receive sufficient sunlight.
They won't compete for important resources, so they will thrive.
Some pepper varieties naturally grow larger or smaller than average.
For larger varieties, it may be necessary to increase the spacing between plants to 18 to 24 inches to suit their size better.
Conversely, smaller varieties can be spaced a bit closer together, around 12 inches apart.