Traps are expected to go up around Edmonton this week to capture the emerald ash borer. The shining and dangerous pest is poised to wreak havoc on Edmonton’s $400-million population of ash trees, and the city has two staffers working full time to detect any advance here as the invasive bug closes in from the west or east into Alberta. “We have the largest percentage of our urban forest canopy in green ash of almost any city in North America,” said Michael Jenkins, senior scientist with the City of Edmonton. Ranging from 8.5 mm to 14 mm long and 3.1 mm to 3.4 mm wide, the beetle is difficult to spot. “A single piece of firewood can destroy millions of trees,” warns a poster depicting a stack of ash firewood as dynamite sticks with an emerald ash borer at the tip of the fuse.

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