Concorde pears in a healthy block. Fireblight can become systemic in Concorde trees. The 2008 season was a serious fireblight year for pears in Washington’s higher elevations, reports Tim Smith, Washington State University Extension educator for north central Washington. Generally, it was a cool spring, with just a couple of periods of warm weather. One warm period, on May 7 to 8, was responsible for outbreaks in pears that were blooming at that time in the northern parts of Washington, including the Okanogan Valley and the upper Wenatchee Valley, Smith said. There was no rain during that period in the […]