The chilly conditions may seem counterintuitive to tree work, but winter is actually a good time for Highland Park officials to ramp up their battle against the dreaded emerald ash borer.
While the pest has been known of in the North Shore for many years, Highland Park's infestation was first identified in 2011 and accelerated in 2012. Since then the city and the park district have engaged in a long campaign to remove the bug that wreaks havoc on ash trees.
Approximately 1,000 trees were knocked down in 2014 on park district property, according to Ted Baker, parks director. He said more will be coming down soon even in the low digit temperatures.
"Winter is a good...