Having an Arborist take care of your pruning will ensure that the proper tools are used for the job. Rhododendrons, Azaleas, and Andromeda are plants that should almost always be pruned by hand. Plants like Boxwood, Japanese Holly, and Burning Bush are shrubs that you can use shears on.
Shearing is a good type of pruning when going for a certain formal aesthetic, but if you only ever shear your shrubs without thinning, you will have no interior growth on your plants. This may not seem like much of an issue until snow damage occurs and the plant is no longer salvageable! Proper pruning when performed at the correct time also helps to improve flower and fruit production.
Fruit Tree pruning is another service that is best left to a licensed Arborist to improve your chances at an abundant crop yield.