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SCOTT HARRINGTON

LANDSCAPE AND TREE SERVICE, LLC

(608) 354-8228


PRUNING STANDARDS

The information below is from the American National Standards for pruning, ANSI A300-2001, designed to help you understand exactly what will be accomplished in a pruning operation

Branch Size:

The minimum or Maximum diameter size of branches to be removed should be specified in all pruning operations. This establishes how much pruning is to be done.

Pruning Objectives

Pruning objectives should be established prior to beginning any pruning operation. ANSI A300-2001 provides 2 basic objectives.

1) Hazard Reduction Pruning

Hazard reduction pruning (HRP) is recommended when the primary objective is to reduce the danger to a specific target caused by visibly defined hazards in a tree.


For example your estimate may read:


Objective: Rear maple tree has multiple dead limbs over the shed, hazard reduction pruning is recommended


2) Maintenance Pruning


Maintenance pruning (MP) is recommended when the primary objective is to maintain or improve tree health and structure and include hazard reduction pruning


For example, your estimate may read:


Objective: Maintenance prune back yard tree to maintain or improve vigor, health, structure and included hazard reduction pruning

Pruning Types

Hazard reduction pruning and maintenance pruning should consist of one or more of the pruning types noted below.


Crown Cleaning: Crown cleaning shall consist of the selective removal of one or more of the following items: dead, dying or diseased branches, weak branches and sprouts (sucker growth).


Crown Thinning: Crown thinning shall consist of the selective removal of branches to increase light penetration, air movement and reduce weight.


Crown Raising: Crown raising shall consist of the removal of lower branches to provide clearance.


Crown Reduction: Crown reduction decreases the height and (or) spread of a tree. Consideration should be given to the ability of a species to sustain this type or pruning.


Renewal Pruning: Renewal pruning is performed on multiple-stemmed shrubs by removing approximately 1/3 of the oldest and tallest stems near ground level to encourage development of new stems.


Vista Pruning: Vista pruning is selective thinning of framework of limbs or specific areas of the crown to allow a view of an object from a predetermined point.


Crown Restoration: Crown restoration pruning should improve the structure, form and appearance of trees, which have been severly headed (topped), vandalized or storm damaged.


Young Trees; Removal of select branches to aid in growth and structural development.


NOTE: Due to the threat of Dutch Elm Disease, to Elms, and Oak Wilt, to Oak Trees, pruning of these species will occur only between October 15 and April 1 as per Wisconsin DNR Regs.

Scott Harrington Landscape And Tree Service, LLC


608-354-8228


ISA Certified Arborist (#NE-7141)

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