Commonly known as EAB, the Emerald Ash Borer, Agrilus planipennis, is an invasive wood-boring Jewel Beetle native to East Asia and Eastern Russia. It was accidentally introduced in North America from infested solid wood packaging material likely from overseas shipping containers.

Since its detection in 2002, it has rapidly spread despite efforts to contain it. Tens of millions of ash (Fraxinus) tree species have perished resulting in considerable ecological and economic impacts. EAB remains undetected for years causing a slow decline in tree health. However, once infestation thresholds are surpassed, tree mortality is inevitable with a 99.9% mortality rate within 8-10 years.

Edmonton has roughly 88,000 ash trees found mostly along street boulevards and in open green spaces. This represents about 39% of all city boulevard trees and 22% of our urban forest canopy. It is estimated there are the same amount of ash trees found on private properties. Our urban forest plays a vital role in supporting biodiversity, maintaining healthy ecosystems, providing habitats for wildlife. Our city trees also support our health and well-being.

The timing is critical. Early detection of EAB can save thousands of ash trees. Read more to discover how you can help.