TradeVerify Christmas Tree FactsChristmas trees have been sold commercially in the United States since about 1850. Until fairly recently, all Christmas trees came from the forest. In 2002, Oregon, North Carolina, Michigan, Pennsylvania, Wisconsin, Washington, New York, and Virginia were the top Christmas tree producing states. Oregon was the leading producer of Christmas trees &＃8211; 6.5 million in 2002. The best selling trees are Scotch pine, Douglas fir, Noble fir, Fraser fir, Virginia pine, Balsam fir and white pine. More than 2,000 trees are usually planted per acre. On an average 1,000-1,500 of these trees will survive. In the North, maybe, 750 trees will remain. Almost all trees require shearing to attain the Christmas tree shape. At six to seven feet, trees are ready for harvest. It takes six to ten years of fighting heavy rain, wind, hail and drought to get a mature tree. In the United States, there are more than 21, 000 Christmas tree growers.