Summer pruning is also recommended for certain slower growing shrubs such as boxwood and yews. Pruning does encourage new growth so if you want to wait until end of summer or beginning of fall to prune, that new growth will not have time to harden off and prepare for winter and could be damaged by the cold and frost.
Summer is a good time to prune crab apples and other trees that are prone to forming water sprouts on their limbs. Trees that tend to "bleed" a lot if pruned in the spring can be pruned now. Birches and Japanese Maples are two of the common ones that do this. Any major structural pruning is better left until the trees are dormant. Once the leaves have fallen, you can get a much better look at the branching structure and it is easier to make proper pruning cuts.
If you do not have summer pruning as part of your service bundle with us, contact us and we will be glad to get you a price for this service!