The process of shaping begins when the tree is very young and is on going as it continues its growth. Trimming is accomplished by us ing a sharp scissors or shears. This traditional tool is called butterfly shears or bonsai shears and is used for removing foliage and light branches. When heavier branches are removed, we call it pruning and the tool to use is the concave cutter, for which there is no substitute. The concave cutter allows you to remove small, medium and even large branches without leaving any visible scars. Some trees such as the Juniper should be trimmed by using the thumb and index finger to remove new growth and to
prevent browning and a "sheared" appearance.
How to Prune Bonsai Tree