The lower branches of a tree are removed to achieve a predetermined height above ground level. This is to gain sufficient height to maintain right of way for people and/or vehicles. Crown lifting can also allow more light to penetrate an understory or flowerbed. It may also help deter undesirable access to private property where branches may be used to scale walls or fences.
In all cases, crown lifting will improve the aesthetic look of the tree.
The removal of a proportion of small live branches throughout the crown to achieve an even density of foliage to create a well spaced and balanced branch structure to alleviate light and shade issues.
Specific sections of the tree are selectively reduced to create a balanced aesthetic crown to maintain good structural integrity.
To decreases leverage and the sail area of the tree by reducing biomechanical stress. It retains the main framework of the crown and can allow retention of a tree in a confined space and to make the tree more suited to its surroundings. It is also a technique used where clearance from a specific target is required.
Large dead branches are removed if they pose an unacceptable risk to people and property, such as deadwood overhanging childrens' play areas, greenhouses or conservatories.
The management of weak tree structures that may be prone to failure, particularly near people and property. A physical restraint is applied to minimise risk and help conserve the appearance of the tree.
Pruning a young tree will help to free it of any major physical weakness in maturity. It will also compliment the management objectives of a new site.
Cyclical cutting of new branches that grow after pollarding will encourage the formation of protective knuckles to increase tree life expectancy.