TreeAzin Treatment


TreeAzin is a naturally occurring insecticide that was formulated by researchers from the Canadian Forest Service in collaboration with the firm BioForest Technologies. The active ingredient within TreeAzin is azadirachtin, a natural compound extracted from the seeds of a tropical tree – Neem – long used for its medicinal properties and insecticides. TreeAzin is injected directly into the tree trunk after piercing small shallow holes and will circulate in all parts of the tree with the natural movement of the sap. Treatment with TreeAzin requires precision, patience and care, otherwise the dosage is incomplete. Too often, the rule of lowest bidder forces arborists to hurry and this result in an incomplete dosage, which undermines the effectiveness of the product. Be careful in who you hire for the sake of your trees!

Insects that feed on a tree treated with TreeAzin lose their appetite and ability to reproduce, and will eventually die.


TreeAzin, which was the subject of an emergency registration for the 2011 and 2012 seasons, received its permanent registration by the Pest Management Regulatory Agency (PMRA) in 2013. The approval allows the use of this product to protect ornamental and forest trees against the emerald ash borer, gypsy moth, forest tent caterpillar, spruce budworm, cedar leafminer, birch leafminer, sawflies and jack pine budworm.