Browse resources Displaying 1 - 1 of 1 resources Photo: Judith Kowalski (Cropped from original) Historic heatwave offers lessons for Christmas tree growers Damage assessments after the historic heat wave of June 2021 in Oregon provided lessons for the state's Christmas tree growers. Those assessments showed how damage varied by type of tree and location of farms. Judy Kowalski | Oct 2021 | Article