The removal of the outer proportion of a tree to reduce the size of the canopy.
Reduction of a branch can alleviate mechanical stresses experienced by trees during times of excess winds and prevent branch fall.
A reduction should make the tree more suited to its immediate environment or to reduce the effects of shading, light loss or encroachment of the tree on property.
The final result should retain the main framework of the crown, and so a significant proportion of the leaf bearing structure. It should leave a similar, although smaller outline..
Crown reduction cuts should be as small as possible and in general not exceed 100mm diameter except for certain circumstances.
Reductions should be specified in meters/feet, not percentages as has been practiced in the past.