(Portland, OR) -- Oregon residents can expect to pay more at the Christmas tree lot this year. Officials say a variety of factors has led to what is believed to be a ten-to-30-percent spike in prices over last year across the Pacific Northwest. Christmas tree farm owners say supply chain and transportation costs have been a huge factor. They say forest fires, drought, and extreme heat this summer in the Pacific Northwest took a collective toll on this year's tree crop. The Beaverton Holiday U-Cut Tree Farm tells KATU-2 the summer heat wave killed more than 60-percent of the trees they planted last winter.