Pollarding is a tried and trusted tree management technique usually used when the tree crown has grown too large for its location.
Tree pollarding is also a great technique to allow for quick re-growth of the tree, or in cases where severe defects or weaknesses are making the tree unstable.
Pollarding is a pruning system in which the upper branches of a tree are removed, promoting a dense head of foliage and branches. Pollarding was first mentioned in Ancient Rome during the 1st Century BC. It has been common in Europe since medieval times and is practised today in urban areas worldwide, primarily to maintain trees at a predetermined height.
Traditionally, trees were pollarded for one of two reasons: for fodder to feed livestock, or for wood. One consequence of pollarding is that pollarded trees tend to live longer than un-pollarded specimens because they are maintained in a partially juvenile state, and they do not have the weight and windage of the top part of the tree.
Pollards tend to grow slowly, with narrower growth rings in the years immediately after cutting.