Contact Us

Email us
Phone: +1.678.367.0981
Fax: +1.240.547.1795

Mailing Address

International Society of Arboriculture
PO Box 191
Annapolis Junction, MD 20701
United States

Physical Address

International Society of Arboriculture
270 Peachtree St NW, Suite 1900
Atlanta, GA 30303
United States


Event Details


Date: December 4, 2023
Location: Rotary Field House at South Surrey Recreation Center Complex, Surrey, British Columbia, CANADA
Organizer: PNW-ISA Chapter
Description: Arborists and foresters conducting tree risk assessments need to

a) know what to look for, and

b) 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 vigour 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.

Improve your tree disease field assessment skills in this all-day class at Sunnyside Forest and Rotary Field House located at the South Surrey Recreation Center complex. Morning lectures for 2.5 hours will cover visual assessment techniques for disease, using a combination of signs and symptoms of common diseases in native PNW trees. Lunch will be included.

In the afternoon, we will be outdoors for 3 hours examining diseases of Douglas-fir, western hemlock, western red cedar, bigleaf maple, and Pacific madrone. The types of wood decay, fungus fruiting bodies, as well as structural and risk implications will be discussed, and sonic tomography and resistance drilling will be demonstrated as examples of advanced risk assessment techniques.

The diseases to be covered will include Phaeolus schweinitzii, Heterobasidion occidentale, Armillaria ostoyae, Porodaedalea pini, Kretzschmeria deusta, Phellinus sulphurascens, Neofusicoccum arbuti and others.

This course will be of use to anyone interested in tree diseases, and particularly anyone conducting risk assessment of trees with disease.
Contact Name: Sharon Korte
Contact Phone: 503-874-8263
Contact Email:

Seats Available: 30
CEUs available: Yes

Start Date: 9:30 AM, December 4, 2023
End Date: 3:30 PM, December 4, 2023

Address: Rotary Field House at South Surrey Recreation Center Complex
2197 148 St
British Columbia
V4A 9P5
108 Events