How and when should I prune blueberries?
Certified GKH Gardening Expert
The best time to prune these is late winter, or early spring. As for how to prune them- This will depend on the type of blueberry and its age.
This article will explain in greater detail: https://www.gardeningknowhow.com/edible/fruits/blueberries/blueberry-plant-pruning.htm