If emerald ash borer is found, window to treat Denver ash trees is limited

DENVER (Your City Now) — Denver City Forester Rob Davis spoke with Denver 8 TV on the value of ash trees in the Mile High City, and the impact the emerald ash borer (EAB) could have on them. “Once EAB shows up in a city, usually it’s a 10-year period before all the ash trees that are not protected will die,” Davis said. “But trees that are protected will live — as long as somebody treats them.”