Workshop Descriptions

Advanced Tree Climbing Workshop

The Pacific Northwest Chapter and the Women’s Tree Climbing Workshop are excited work together to offer this Advanced Tree Climbing Skills Workshop. The workshop is open to people of any gender identification. The instructors are experienced at teaching climbers from many backgrounds.

This workshop is for climbers who are beyond the basics. Individuals shall be confident conducting the following skills before considering attending this event:

  • Identify and communicate PPE and climbing components
  • Installing their own climbing system
  • Move freely around a tree’s canopy
  • Limb walk further than a body’s length from the trunk of the tree
  • Advance your own climbing line while aloft
  • Ascend beyond 50’ in the canopy comfortably

Advanced Tree Identification

This course is designed as a supplement and compliment to the Basic Tree Identification course. Where the basic course covered concepts and terminology of tree identification, this advanced identification workshop will expand upon those concepts and techniques, and cover individual species common to our area.  We will be going over identification characteristics of common trees in the region.

Basic Tree Appraisal

Focusing on the CTLA Trunk Formula Technique (TFT), this workshop gives an overview of the appraisal process and provides an opportunity to practice in the field. Participants will review common mistakes and refine their craft as appraising arborists.

Common Fungi Affecting PNW Trees and Implications for Tree Risk Assessment

This course will be of use to anyone interested in tree diseases, and particularly anyone conducting risk assessment of trees with disease.

Arborists and foresters conducting tree risk assessments need to:

  1. Know what to look for, and
  2. Know what they are looking at.

Fungi affecting trees show considerable variability in form and their ability to cause decay. Part of that variability is driven by the species of tree and fungus, the age and vigor of the tree, the extent of the fungal attack and associated decay, and the ability of the tree to compartmentalize the invading pathogens. Understanding the CODIT process is integral to understanding where decay may be within the tree. Minimizing bark scaring from park or forest management activities reduces the creation of fungal infection courts that threaten long-term tree health.

Fruit Tree Pruning

Arborists are often asked to prune fruit trees that have been long neglected or haphazardly pruned without a clear philosophy. This class will equip participants with knowledge specific to fruit trees: common trained forms and pruning approaches, species-specific habits and challenges, and tactics to improve production of quality fruit. We will discuss how to interpret and approach client expectations and needs while prioritizing biology-based care, and opportunities for educating and partnering with clients. The day will consist of an indoor lecture, outdoor tour/demonstration on a site with diverse trees, and light hands-on practice in groups.

ISA Tree Risk Assessment Qualification

The ISA Tree Risk Assessment Qualification (TRAQ) program provides an opportunity for professionals in the arboriculture industry to expand their knowledge through education and training in the fundamentals of tree risk assessment. This qualification promotes the safety of people and property by providing a standardized and systematic process for assessing tree risk. The results of a tree risk assessment can provide tree owners and risk managers with the information to make informed decisions to enhance tree benefits, health, and longevity.

ISA Tree Risk Assessment Qualification Renewal

The ISA Tree Risk Assessment Qualification (TRAQ) program provides an opportunity for professionals in the arboriculture industry to expand their knowledge through education and training in the fundamentals of tree risk assessment. This qualification promotes the safety of people and property by providing a standardized and systematic process for assessing tree risk. The results of a tree risk assessment can provide tree owners and risk managers with the information to make informed decisions to enhance tree benefits, health, and longevity. The Tree Risk Assessment Renewal workshop is a one-day refresher, with five hours of instruction, and three hours of take the exam. Current TRAQ holders can complete the abbreviated course as early as four years into their qualification.

Preserving Veteran Trees

These tree veterans will combine their diverse experiences to present a diverse and comprehensive perspective on preserving veteran trees. Each presenter will give a talk relating to their unique arena in the care of ancient trees. This seminar will cover;

  • How veteran trees function biologically,
  • How our views as an industry have changed over time regarding veteran tree care,
  • How our current industry standards apply to veteran tree care,
  • Case studies on how care of veteran trees is currently being performed in the field, and
  • How technologies can be utilized to preserve veteran trees.

This workshop will feature information on a large range of veteran tree species native to Northern California and Lowland Puget Sound. Tree care will be discussed in situations including residential sites to remnant forest trees in your neighborhood park. A wide range of tree risk mitigation options will be explored.

Tree Disorder Diagnosis

Diagnosing plant health problems takes specialized knowledge and experience. In this workshop instructor Jim Flott will recommend diagnostic steps to follow in determining the problem. Case studies will be presented to demonstrate diagnosis process. This workshop provides a solid foundation for arborists of all skill and experience levels to aid in the diagnosis of tree disorders.

Tree Growth & Development: What Arborists Need to Know

This course, taught by Tom Hinckley, UW Emeritus Professor of Woody Plant Physiology, will cover the basics of tree biology and how trees grow in response to their environment. Topics to be covered include meristems and their functions, growth patterns, tree responses to stress, tree competition and mortality, and how trees get water from roots to their canopies. The class includes a lecture plus hands-on examples with whole trees and tree parts from a range of circumstances and species. We will put current concepts of tree growth and development into a form that arborists can use in their work.

Trees and Construction

This all day workshop will include information specific to arborists working around construction. The class is appropriate for Commercial Arborists, Consultants, and Professionals in related fields such as Architecture, Landscape Architecture or Planning. The workshop will be 75% indoors with lecture and group activities. We will go outdoors to look at tree preservation examples near the classroom.

Women’s Tree Climbing Workshop

PNW-ISA has teamed up with the Women’s Tree Climbing Workshop to offer a fun, safe space to learn. No worries about looking silly or not being safe. This workshop is open to all women (18+), skills and ability levels.  Bring your tree climbing equipment (if you have any) and we’ll help you determine what’s safe to use for tree climbing. Don’t have equipment? We’ve got you covered. Taught by International Tree Climbing Championship competitors Bear LeVangie, Melissa LeVangie, with over 40 years of collective climbing experience, you know you’re in good hands.

You will learn about a multitude of styles in climbing equipment and techniques. Come network with women and female arborists from all over the Chapter! You will leave from this climbing experience with new skills, wonderful memories, new friends, and a sense of personal accomplishment. This workshop is limited to 30 participants. We will take a paid waitlist.