GILBERT — We’re just a few days into the Christmas season and with many people getting their decorations up, the centerpiece is usually a tree. Even though some Valley Christmas tree lots haven’t even been open a week, they’re on track to surpass last year’s sales. “The tree market this year has been booming,” Diana Ditkof with Valley View Christmas Trees said. “I think we’re almost double the number of trees that we sold for the same time last year.”