Black Friday Sale: Get 75% off a digital subscription

John Davis

Emerald ash borers invade Baltimore

Emerald ash borers invade Baltimore

A voracious Asian beetle that's killed millions of ash trees across North America has finally been spotted in Baltimore, posing a costly and difficult challenge for a city that stands to lose more than 200,000 of its most common trees to the exotic pest's onslaught. It could denude blocks lined with ash and cost the city millions of dollars to remove dead or dying trees from public lands, while homeowners may be forced to pay hundreds or even thousands to treat or replace their vulnerable trees.

City officials are developing a plan to deal with the emerald ash borer, which was found in June in traps set in ash trees in Druid Hill Park and near Fort McHenry, according to Craig...