Emerald Ash Borer (EAB) has been devastating Ash trees in Mississauga, Oakville, Burlington and Milton. EAB has spread throughout southwestern Ontario since 2002. This introduced Asia insect kills all species of ash trees. These insects cut off the flow of water and nutrients within the trees by feeding underneath the bark. All Ash trees are at risk of dying from infestation except the Mountain Ash (Sorbus spp.) which is not a true Ash. Mortality normally takes 2 to 3 years however a severe case can terminate a tree within one season. It is estimated that all Ash trees in the region may be gone by 2017.

The federal Canadian Food Inspection Agency (CFIA) has instituted a quarantine zone through a Ministerial Order including Mississauga, Burlington, Oakville, Milton and most of southern Ontario. The Order prohibits and restricts movement of nursery stock, trees, leaves, logs, lumber, wood, wood chips, bark chips and firewood from all ash species unless authorized by a Movement Certificate issued by the CFIA. 

This prohibition prevents the spread of the EAB into un-infested areas of Ontario. Arborcorp is authorized by a movement certificate.