(King City, OR) -- Oregon's extremely mild winter and warm spring days have caused larvae of the invasive emerald ash borer pest to mature faster and emerge weeks earlier than usual. A landscape company alerted the Oregon Department of Forestry about ash trees in King City that appeared to be infected with the insect. Normally they emerge from inside of tree trunks in early June, but adults were found ready to emerge from trees in King City much earlier. King City is within the Washington County quarantine zone, where the insects were previously found. Infected trees will be removed in King City.