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Crown Reduction: Crown Reduction is used to reduce the height <br />and /or spread of a tree, Crown reduction varies from topping, a <br />destructive practice, in that cuts are not made Indiscriminately, <br />resulting In large stubbed off limbs that are subject to decay. <br />Reduction is the selective removal of branches and stems to <br />decrease the height and /or spread of a tree or shrub. This type <br />of pruning Is done to minimize the risk of failure, to reduce height <br />or spread, for utility line clearance, to clear vegetation from <br />buildings or other structures, or to Improve the appearance of the <br />tree. Portions of the crown, such as Individual limbs, can be <br />reduced to balance the canopy, provide clearance, or reduce <br />likelihood of breakage on limbs with defects. While reducing a <br />crown, tree workers must adhere to basic tree trimming practices <br />involving limb /branch size relationships and use of the branch <br />bark collar in avoiding the onset of decay at cut sites, <br />e. Crown Restoration: Crown Restoration Is corrective pruning used <br />as a means to restore the form of crowns that have been <br />previously damaged by extenuating circumstances, Restoration <br />Is the selective removal of branches, sprouts, and stubs from <br />trees that have been topped, severely headed, vandalized, lion <br />tailed, broken in _a storm., or otherwise damaged. The goal of <br />restoration is to improve a tree structure, form or e�5e rage -- <br />- "' Rropery one, Chic technique provides a more pleasing, <br />unpruned natural look to the tree compared to topping or <br />shearing. <br />Crown Raisin o: Crown Raising consists of removing the lower <br />branches of a tree In order to provide clearance for buildings, <br />vehicles and pedestrians. It Is Important that a tree have at least <br />one -half of its foliage on branches that originate in the lower two - <br />thirds of its crown to ensure a well-formed, tapered structure and <br />to uniformly distribute stress within the tree. <br />B. PALM TREE P LINING <br />Any tree work performed on a City tree must be done according to the City's specification. The <br />criterion for pruning varies based on the type or purpose of pruning, Palm Pruning consists of <br />maintaining the crowns and trunks of palm trees including the pruning of spent or declining <br />fronds, seed pods and the skinning or shaping of spent petiole bases into a ball or nut as <br />applicable by palm type. <br />(1) The specifications for the pruning of Queen Palm trees are as follows: <br />1. Maintenance of the ornamental ball located at the base of the palm canopy, <br />directly below the live fronds, shall be as described by species as follows: <br />2. Queen Palm (Syagrus romanzofflanum): Palm pruning Is the removal of fronds, <br />flowers, fruit, stems, or loose petioles that may create a hazardous condition, <br />Palms also may be pruned for aesthetic reasons to eliminate sprouts and stems <br />or dead fronds and seapods. Live, healthy fronds should riot be removed. If they <br />must be removed, however, avoid removing those that Initiate at an angle of 45 <br />degrees or greater above horizontal. Fronds removed should be severed close to <br />the petiole base without damaging living trunk tissue. Climbing spikes should not <br />be used to climb palms for pruning, <br />25B -28 <br />