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Basic Tree Identification - SOLD OUT

Pacific Northwest ISA

Monday, April 30, 2018 from 9:00 AM to 3:00 PM (PDT)

Ticket Information

Ticket Type Remaining Sales End Price Fee Quantity
PNW-ISA or ISA Member Sold Out Ended $144.00 $5.59
Non Member Sold Out 4h 24m $180.00 $6.49
Allied Professional Sold Out 4h 24m $162.00 $6.04
Student Sold Out 4h 24m $90.00 $4.24

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Event Details

This workshop is currently SOLD OUT. We welcome you to join the waitlist but also consider enrolling in an alternative event such as Pruning, Planting and Selecting for Street Tree Diversity or Tree Growth & Development: What Arborists Need to Know.

Proper tree management starts with knowing the tree you’re managing. When trying to recommend an appropriate treatment, diagnosing an issue, or understanding how a tree will respond to a change in conditions, identifying the tree you’re dealing with is the first step.

This basic identification workshop serves as an introduction to common terms, concepts, and techniques in tree identification.  The objective of the course is to get you familiar with how to identify a tree, covering leaves, fruit, bark, twigs, and form.  

As there are well more species that can grow in our region than can be covered in a single basic workshop, focus will be on larger concepts that will lay the ground work for future identification. We will cover the use of dichotomous keys and get familiar with descriptive terminology to help narrow down unknown species.

The workshop will be inside for the first half and will go outside for the second half to get familiar with using the concepts and terminology in the real world. We’ll be in the University of Washington Arboretum, so we will have no shortage of species to find! The workshop will be hands on, and questions and interaction is encouraged. Please bring proper attire for standing and taking notes in inclement weather.


8:30am Arrival, coffee, and networking

9 – 11:30am: Review Basics of Tree ID (terminology, concepts, techniques) and focus on some specific trees

11:30—12pm: Lunch

12 pm – 3pm: Walk through the trees, hands-on ID focused on concepts and common species


J. Casey Clapp works as a Tree Inspector for the City of Portland, OR, and was previously a consultant with Tree Solutions, Inc.  He specializes in tree identification, forest-wide and individual tree management, tree diagnostics, risk assessments, and tree cones.  He holds a Master of Science degree in Environmental Conservation with a focus in Forest Resources and Arboriculture (University of Massachusetts, Amherst) and a Bachelor of Science degree in Forest Management with a focus on Urban Forestry (Oregon State University).  He’s been involved in urban forestry and arboriculture since 2010. Casey has been studying tree biology and dendrology since 2007, and has presented at conferences across the nation and internationally.  He’s an ISA Certified Arborist and Qualified Tree Risk Assessor.

Refund Policy

  • Cancellations made at least 10 days prior to the event will be refunded at 100%.
  • Cancellations made within 5-9 days of the event will be refunded at 75%.
  • Cancellations made within 1-4 days of the event will be refunded at 50%.
  • Refunds will not be made available for no-shows.
Have questions about Basic Tree Identification - SOLD OUT? Contact Pacific Northwest ISA

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When & Where

Washington Park Arboretum - Graham Visitor's Center
2300 Arboretum Drive E
Seattle, WA 98112

Monday, April 30, 2018 from 9:00 AM to 3:00 PM (PDT)

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