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                                                                                                                              REVIEW OF PRUNING

 

JAPANESE ZELKOVA (Zelkova serrata)

5109 Adair Way, Los Gatos, CA

October 8, 2013

 

We were asked to review and evaluate the recent pruning of a Zelkova serrata positioned within a right of way planting strip in front of 5109 Adair Way, Los Gatos, CA.

Zelkova trees require regular inspection and pruning –especially if exhibit multistem condition – as they are prone to bark inclusion and limb breakage.

The tree appears to have undergone crown thinnning – the removal of branches to reduce density evenly throughoutcrown without modifying size or shape.1  A few larger (greater than 4 inch) cuts were observed, indicating some structural pruning was conducted, presumably to remove weak or defect branches.

Based on neighboring Zelkova trees planted along the street, it is estimated that approximately 20-25% of the tree’s leafbearing crown was removed, well within ANSI Standards of not more than 25% in one annual growing season. 2 

At the time of inspection, the tree appears to not have suffered any ill effects as a result of recent pruning.

 

REFERENCES

_________________________

       1Structural Pruning, A Guide for the Green Industry, Gilman, Kempf, Matheny and Clark, Urban Tree

       Foundation, 2013

       2 ANSI, A300, Part 1, Pruning Standards

 

TERMS AND CONDITIONS

The following terms and conditions apply to all oral and written reports and correspondence pertaining to consultations, inspections and activities of

Robert J Dietz, Certified Arborist:

1. Any legal description provided to the appraiser/consultant is assumed to be correct. No responsibility is assumed for matters legal neither in

character nor in any opinion rendered as to the quality of any title.

2. The appraiser/consultant can neither guarantee nor be responsible for accuracy of information provided by others.

3. The appraiser/consultant shall not be required to give testimony or to attend court by reason of this appraisal unless subsequent written

arrangements are made, including payment of an additional fee for services.

4. Loss or removal of any part of this report invalidates the entire appraisal/evaluation.

5. Possession of this report or a copy thereof does not imply right of publication or use for any purpose by any other than the person(s) to whom it is

addressed without written consent of this appraiser/consultant.

6. The report and the values expressed herein represent the opinion of the appraiser/consultant, and the appraiser’s/consultant’s fee is in no way

contingent upon the reporting of a specified value nor upon any finding to be reported.

7. Sketches, diagrams, graphs, photos, etc., in this report, being intended as visual aids, are not necessarily to scale and should not be construed as

engineering reports or surveys.

8. This report has been made in conformity with acceptable appraiser/evaluation/diagnostic reporting techniques and procedures, as recommended by

The International Society of Arboriculture.

9. When applying any pesticide, fungicide, or herbicide, always follow label instructions.

10. No tree described in this report was climbed, unless otherwise stated. We cannot take responsibility for any defects which could only have been

discovered by climbing. A full root collar inspection, consisting of excavating the soil around the tree to uncover the root collar and major buttress

roots, was not performed, unless otherwise state. We cannot take responsibility for any root defects which could only have been discovered by such

an inspection.

CONSULTING ARBORIST DISCLOSURE STATEMENT

Arborists are tree specialists who use their education, knowledge, training, and experience to examine trees, recommend measures to enhance the

beauty and health of trees, and attempt to reduce risk of living near trees. Clients may choose to accept or disregard the recommendations of the

arborist, or to seek additional advice. Arborists cannot detect every condition that could possibly lead to the structural failure of a tree. Trees are living

organisms that fail in ways we do no fully understand. Conditions are often hidden within trees and below ground. Arborists cannot guarantee that a

tree will be healthy or safe under all circumstances, or for a specified period of time. Likewise, remedial treatments, like medicine, cannot be

guaranteed.

 

ROBERT J DIETZ, ISA

CERTIFIED ARBORIST #RM7281-A

1925 CHERRY AVE., SAN JOSE, CA 95125

408.891.8598 arborist@robertdietz.com

 

 
 

 

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