Crown Raising is the removal of the trees lower limbs to a specified height.
Any part of the tree that extends below the desired height is removed. This process is often carried out for access reasons, allowing traffic and pedestrians to pass underneath safely.
Crown lifting can also prevent trees from encroaching on buildings or properties, preventing any possible future damage which may have been caused by the rubbing of the trees limbs.
It can be beneficial to crown lift trees from a young age, doing this will help shape the lower section of the canopy to give desired distance from below the tree. It is more aesthetically pleasing and prevents creating large pruning wounds, as small wounds are made over longer periods.