Association of Professional Foresters of Great Britain
Over the years, it will be natural for some branches and limbs of a tree to die. They will no longer produce leaves, fruit or flower and it is important to remove this dead wood in order for the remaining parts of the tree to continue to flourish successfully.
In some circumstances, it is necessary to ensure that a tree maintains a certain height. The practice of pollarding, involves the removal of all the upper branches of a tree with the resulting effect being that a dense head of branches and foliage is created.
Trees that have undergone pollarding tend to live longer as by removing the crown on regular intervals they are kept in a juvenile state as they do not experience having significant weight in their top half.
This is usually carried out to maintain their “neatness” not only to conform to a “nice look” as trimming will promote a bushy growth but in some circumstances to help toward health and safety especially if a hedge borders a road or footpath.
Some species will not flower or produce fruit for a number of years after having experienced a hard trim and those that have been kept to the same height for number of years will produce a “hard knuckle” at that height with the result being that it will behave like a tree that has undergone pollarding.
Infected, dead and even healthy branches are removed in order to maintain the health and structure of a tree. They are also removed if the environment and those using it around them could be put in any danger. Pruning when required will encourage a tree to develop a sound structure which will help prevent damage during severe weather conditions
Although this suggests the removal of any workers, their tools and any debris they have created from having carried out their work, whilst a competent tree surgery company will ensure this, it may be that the resulting debris can be used in other ways.
For example; if a tree has been felled, then it may be that the owner would require the ensuing wood in log form for burning and for some people wood debris is left on site in order to provide an environment for certain bugs which would further encourage wildlife such as birds and hedgehogs amongst others into the garden.