Crown Lift or Crown Raising

Crown lifting is the removal of the lowest branches and/or preparing of lower branches for future removal.

 

Crown lifting should not normally include the removal of large branches growing directly from the trunk as this can cause large wounds, which can become extensively decayed leading to further long-term problems (in worst case scenarios, a tree needing to be felled.)

 

Crown lifting on mature trees should be avoided or restricted to secondary branches, (secondary branches are the smaller branches growing from the main leading stem) or shortening of primary branches, rather than the whole removal wherever possible.

 

Crown lifting is an effective method of increasing light transmission to areas closer to the tree or to enable access under the crown. This should be restricted to less than 15% of the live crown height and leave the crown at least two thirds of the total height of the tree. Crown lifting will always be specified with reference to a fixed point, e.g. ‘crown lift to give 5.5m clearance above ground level’.

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