Threats to Trees: Insects

Find out how to manage the insect population that affects our native trees.

Threats to Trees: Diseases

Learn how to control the spread of disease in Toronto's urban forests.

Mechanical Injuries and Other Threats to Trees

From lawnmowers to bike locks, there are many ways a tree can be damaged.

Urban Forest Management

Learn how the City helps our native species thrive with prescribed burns, forest thinning and controlling invasive plants.