With crown reduction and re-shaping a percentage of the overall height and size of the tree is reduced evenly throughout the crown taking its natural shape into consideration. This process may be carried out for a number of reasons:
- The tree maybe too large for its permitted space.
- The overall size of the tree maybe too heavy for its species ie; Ash trees are susceptible to strong winds or heavy snow so crown reduction and re-shaping could help prevent the overloading and breaking of limbs or branches.
- If a tree is not structurally sound due to being unbalanced or too heavy in any given direction then crown reduction or re-shaping will accommodate its longevity.
- The tree may simply be out of shape.