WCISA - Structural Pruning


Thursday, September 25, 2014
7:30am - 4:00pm


Date & Time:

Thursday, September 25th, 2014 ~ 7:30am - 4:00pm


The purpose of this workshop is to describe & demonstrate current structural pruning strategies to improve architecture on young, medium-aged and older trees. We discuss not only what & how to improve structure & reduce the likelihood for failure, but also how the tree will respond, incorporating current tree biomechanics research and experience. This is an interactive hands-on program where you will watch tree being pruned and provide input. Active participation is expected of attendees. Come ready to think!


Dr. Ed Gilman - Professor, Urban Trees & Landscape Plants, University of Florida, Gainesville, FL
Brian Kempf - Director, Urban Tree Foundation, Visalia, CA



7:30 am Registration
8:15 am Welcome, Introductions, Key Concepts,
What is structural pruning? How did it begin? Who uses it and why? How do I do it? The day starts off with the basic and advanced techniques used to structurally prune trees. We will describe the lessons learned and mistakes made in the last 15 years of pruning trees.
9:30 am Biomechanics and the science of tree structure sells tree work (part one),
We will then focus on the practical experience of many arborists, and the applied research that supports structural pruning as the heart of risk reduction strategies. You will be surprised that simple mechanical concepts can be understood by our customers when explained using understandable terms.
10:00 am Break
10:15 am Biomechanics and the science of tree structure sells tree work (part two),
Pruning practices appear to be based more on culture and tradition of tree care in a region than on any other factor. Despite ANSI pruning standards, methodology varies greatly from region to region, and from one town to the next within a region. Adoption of well-written specifications can advance our professionalism by clarifying customer expectations. Research inspired by the ANSI standards comparing pruning methods, pruning practices, and pruning responses with the long view will be explained in light of improving structure and reducing risk.
11:30 am Pruning Specifications Development
11:45 am Questions and Discussion
12:00 pm Lunch (Provided)
1:00 pm Outdoor hands-on structural pruning exercises on young, adolescent and old trees,
Pruning the correct live branches can have a dramatic impact on how trees respond to gravity and storms. Structural pruning, designed to reduce growth rate and weight on co-dominant limbs, is the most effective method of minimizing damage from increasingly harsh weather conditions. These methods will be demonstrated and discussed on as many trees as we have time to prune.
3:30 pm Discussion of day’s experiences and pruning recommendations
4:00 pm CEU Sign-out
*Please allow up to 6 weeks for processing of CEUs


Early Registration (until midnight of 9/15/14):

$80.00 - WCISA Member
$105.00 - Non-WCISA Member

Regular Registration (on or after 9/15/14):

$105.00 - WCISA Member
$130.00 - Non-WCISA Member


$55.00 - Please call office to register 866.785.8960 or email heather@wcisa.net or rita@wcisa.net


5.75 - CA - CTW - MS
3.0 - BCMA-P
2.75 - BCMA-S


UN Cooperative Extension Service
8050 Paradise Rd.
Las Vegas, NV 89123

Event Details

Event WebsiteWestern Chapter ISA
ContactHeather Crippen
Phone(866) 785-8960
EmailContact via Email
OrganizationWestern Chapter ISA
InstructorDr. Ed Gilman and Brian Kempf
TCIA MaterialsNo

Location & Directions

UN Cooperative Extension Service
8050 Paradise Rd.
Las Vegas , NV 89123

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