In a Reduction we would reduce the overall size of the crown by a given specification.

The operation should be carried out by pruning the tips of each branch back to a suitable branch union in a manner to create a balanced shape and outline.

The reduction specification can be specified as a percentage (e.g. reduce crown by 30%) or as an absolute amount (e.g. reduce crown by 3m) or as an absolute height & spread specification (e.g. reduce crown to leave the tree with an overall height of 18m and a crown radius of 5.5m).