Trucks brimming with Christmas trees have started arriving in Arlington, signaling it is time to pull out those holiday ornaments. Several Christmas tree markets across Arlington are set to open this Friday, after Thanksgiving. However, holiday shoppers are being cautioned not to wait too long due to a reported shortage of trees this year. Factors Trucks brimming with Christmas trees have started arriving in Arlington, signaling it’s time to pull out those holiday ornaments. Several Christmas tree markets across Arlington are set to open this Friday. However, holiday shoppers are being cautioned not to wait too long due to a reported shortage of trees this year.