Most berry plants will benefit from pruning, including raspberries, blackberries, and strawberries. Similarly, annual pruning on blueberry plants will result in larger, healthier plants and higher fruit yields. Removing small, gangly branches near the base of the plant helps to encourage stronger, upright growth. Always remove any dead or damaged twigs or limbs, including those that still have some green on them.
You should not prune a blueberry plant until it has entered dormancy. Typically this is after all leaves have dropped in the fall. Blueberries can be pruned anytime from late fall through mid-winter, before any buds start to appear.