Browse resources Displaying 1 - 2 of 2 resources Photo: Judy Kowalski (Cropped from original) Drought hinders popular noble Christmas trees Growers and Oregon State University continuously look at novel ways to improve first year planting success. Dec 13, 2022 | News story 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