Is the reduction in height or spread of a trees canopy. Crown reduction may be used to alleviate mechanical stresses on individual branches or the whole of the tree, allow the tree to fit into its immediate environment or reduce the effects of shading and light loss.
The final result should retain the main framework of the crown although a smaller outline as shown above. The objective of the reduction above was to achieve a 20-30% reduction in size to benefit neighbouring properties located nearby in light and safety.
In certain circumstances in may be necessary to reduce a trees canopy by considerably more depending on the age, species and circumstances that preside, this practice is generally termed ‘Pollarding’ which is the removal of all the trees canopy or leaf area to leave a bare structure i.e. 50% reduction of a canopy could be classed as a pollard because this amount of canopy reduction would leave a bare structure. A traditional ‘Pollard’ would result in all the branches of a tree being removed leaving just the trunk at a pre-determined height i.e. trunk left at 5M, this will hopefully allow the tree to regenerate its canopy at this point. This method of ‘Pollarding’ was traditionally used to provide fodder for cattle, firewood or poles for crafting. This method of reducing a trees canopy is only applicable to trees which demonstrate strong vigour and growth therefore lending themselves to be pollarded i.e. Lime, Willow or Poplar etc although their age and condition of health have to be taken into consideration before performing a ‘pollard’. Below is a line of Lime trees which we recently ‘pollarded’