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International Society of Arboriculture
PO Box 191
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International Society of Arboriculture
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Event Details

Advanced Tree Identification

Date: September 3, 2020
Location: Washington Park Arboretum, Graham Visitor's Center, Seattle, Washington, UNITED STATES
Organizer: Pacific Northwest Chapter of ISA
Sponsor: Pacific Northwest Chapter of ISA
Description: This course is designed as a supplement and complement 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.

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

The workshop will be inside for the first third or less, and will go outside to cover individual species. However, to make the course as useful as possible, attendees should choose a few species or genre that they want to examine. The workshop will be hands on, and questions and interaction is encouraged.

Please bring proper attire for standing and taking notes in inclement weather.

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

8:30am: Arrival, coffee, networking
9:00am – 10:30am: Review Basics of Tree ID (terminology, concepts, techniques).
Further examination of fruit and flowers; Comparisons between genera; Comparison between species.
10:30am – 11:30am: Walk through the trees, hands-on ID focused on concepts and common species
11:30am-12:00pm: Lunch
12:00pm – 3:00pm: Walk through the trees, hands-on ID focused on concepts and common species

What to Bring:

Notebook for sketches and notes
Favorite ID books
Clothing for all weather situations


Bess Bronstein is a horticultural consultant, educator, ISA Certified Arborist® and Qualified Tree Risk Assessor based on the Kitsap Peninsula in Kingston, Washington. She has over 30 years experience in arboriculture, landscape management and garden design. Bess holds an A.T.A. degree in Ornamental Horticulture, and a Master of Education (M.Ed.) degree from the University of Washington. She was an instructor for the Edmonds Community College horticulture program for 28 years, with a focus on courses in pruning and tree care, plant identification, plant pests/diseases and diagnosis, and soils. Bess frequently teaches public and professional arboriculture and horticulture courses throughout the Pacific Northwest.
Contact Name: Margo Thorp
Contact Phone: 8003354391
Contact Email:

Seats Available: 30
CEUs available: Yes

Start Date: 9:00 AM, September 3, 2020
End Date: 3:00 PM, September 3, 2020

Address: Washington Park Arboretum, Graham Visitor's Center
2300 Arboretum Drive E
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