Crown Reduction. Crown Reduction is used to reduce the height and/or spread of a tree. Crown reduction varies from topping, a destructive practice, in that cuts are not made indiscriminately, resulting in large stubbed off limbs that are subject to decay. While reducing a crown, tree workers must adhere to basic tree trimming practices involving limb/branch size relationships and use of the branch bark collar in avoiding the onset of decay at cut sites.
