Crown lifting is the removal of the lowest branches of the tree. This does not usually include removal of large branches, as this can cause large wounds which could lead to future problems. Crown lifting on older, more mature trees should be avoided or restricted to secondary branches wherever possible. Crown lifting is an effective way of enabling more light to a property or providing access underneath the tree. It should be limited 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 should be specified with reference to a fixed point, e.g. ‘crown lift to give 5.5m clearance above ground level’.