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For forest sector professionals, a tree marking course certificate is an important career goal

Posted: April 14, 2020

Forests Ontario and the Canadian Institute of Forestry (CIF) offer three levels of certification courses in tree marking. Registration and information on upcoming course support are provided by Kerry Spencer of CIF. Forests Ontario’s Al Corlett coordinates course content and delivery.

There are three course levels:


Level 1: Tree Marker Training. Mandatory for all tree markers on Crown land in Ontario. Huntsville, August 31 to September 4, 2020. Five-day course including exams which lead to a certificate, $2,500; four-day course without exams, $2000.

Level 2: Tree Marking Auditor Training. Dates TBA. Mattawa, $1500

Tree Marker Refresher Course: Required every five years to maintain certificate. October 6 and 7, 2020, Huntsville, $500.


Tree markers carefully select trees for harvest or retention based on their growth potential, benefits to local wildlife, and ability to provide seed.

Qualified tree markers help care for forests and enhance biodiversity. They can distinguish why a tree is stunted, perhaps due to poor genetics or overcrowding, and make a retention or removal decision. Tree markers can spot trees to retain that support forest wildlife, such as cavity trees that shelter birds or mammals. They identify stick nests in trees that belong to eagles, herons or hawks. They learn to protect conifers in a hardwood forest, or retain scarce hardwoods in an evergreen grove, and why such considerations are important.

The tree marking certificate offers many benefits for forest sector professionals. The Level 1 certificate is mandatory for all tree markers working on Crown land. In many municipalities in Ontario, only certificate-holding trees markers may mark woodlots. The course also teaches forest ecology and Ontario forest management practices.

Each day, students study in class in the mornings and apply that information in forest during the afternoon. You’ll be outside rain or shine, so bring a jacket and boots.

For more information, visit the official Ontario Tree Marking Website or register today.