Crown Reduction

Crown reduction is used to reduce the height and/or spread of the crown of a tree by the removal of the ends of branches whilst maintaining the tree’s natural shape as far as practicable.  This is usually shown in meters of canopy removed from the branch tips.

Crown Reduction Diagram


As a general rule pruning should be avoided during the time of leaf/needle production (when the tree draws on its energy reserves) and at the time of leaf/needle fall (when the tree stores energy). 

Outside these periods most trees can be pruned at any time of the year, with a few exceptions: Cherry, Plum and related trees (Prunus species) should be pruned soon after flowering to reduce the risk of bacterial infection. Maple, Birth, Beech and Walnut should be pruned in leaf or just after leaf fall and Magnolia in high summer to avoid 'bleeding' (excluding sap), which although not considered damaging, can be unsightly.
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