The city of Montreal will spend $18 million in 2016 to treat trees affected by the emerald ash borer.
The invasive beetle has been munching its way through forests in Eastern Canada for several years, and arrived on the island five years ago.
City officials have a two-part plan to deal with the insect: cut down trees that have been badly damaged or are at risk of being damaged, and treating trees in the line of fire with TreeAzin, a pesticide.
"We have an injection with a biopesticide they call TreeAzin, and when we have TreeAzin we are going to save this tree for two years," said Real Menard.
"If in the future we have research and development and a new way to do that, we're going to do that."
They have also stepped up plans to plant 21,000 new trees in the city, to compensate for the thousands of trees that are being lost to the insect.
Forest ecologist Dan Kneeshaw said the emerald ash borer is extremely difficult to control.
“The populations keep growing. It just has to find one tree that's not protected and the populations can colonize other trees, there are just too many trees,” he said.