Because avocado trees need lots of foliage to ensure a high amount of fruit, they don't need a lot of pruning. However, your tree may need some minimal pruning to maintain easy tree access, balance, and enough sun exposure. If your tree needs major re-shaping, some heavy pruning may be necessary.
When should I cut back my avocado tree?
The best time when to prune an avocado tree is really anytime, as long as you are doing light pruning. If you wish to do heavy pruning on your avocado tree, then you may want to wait until late winter or early spring, which is right before the active growing period for the tree.
What happens if you don't prune an avocado tree?
Most avocado trees need little or no pruning. Whenever possible, allow them to develop naturally. Avocado leaves produce and store food for the tree. If this food supply is reduced by pruning, fruit production will also be reduced.