Crown lifting and crown reduction is a very skilled area of an Arborist’s work.
Crown lifting is where the lower branches of a tree are removed to effectively raise the crown to a given height. The height is raised by the removal of whole branches or removing the parts of branches which extend below the desired height. The branches are normally not lifted to more than one third of the tree’s total height.
This is a particularly useful treatment for large garden trees where shading is a problem, as the light cannot come in underneath the tree. Crown lifting is also often carried out for access purposes; lifting the crown allows traffic and pedestrians to pass underneath safely.
A crown reduction is where the crown of the tree is made smaller without spoiling the overall shape. This can be done for a number of reasons, such as to reduce the weight in potentially dangerous trees, but can also be useful if trees are obstructing or damaging buildings or power lines. In fruit trees this is also often carried out in order to increase light interception and enhancing fruit quality.