Emerald Ash Borer
Have you spotted a green, flying insect with a metallic green body in your ash trees? It's probably the emerald ash borer, which is so named because it ravages ash trees. This insect belongs to the same family as the beetles. Its size at maturity reaches half an inch long. Its larva is white and digs snake-like galleries in the wood of the tree. The adult feeds on the leaves.
This insect is native to Asia. It has been seen in North America since 2002. It reached us by being carried in transport material, such as crates or pallets made of ash or in firewood of this species. This is the same way it spreads from one area to another in the interior of Canada.
Its damage to ash
It is very difficult to control the Emerald Ash Borer. The reason is simple: it has no known natural predators in North America. Be aware that a tree attacked by EAB can die in less than five years; at worst, it reaches that state in a single year.
The tree's decline usually follows 4 periods. The first one takes between 2 or 3 years. Then, almost no signs that the insect is in the trees are apparent.