Balsam Fir, or Abies balsamea, is a small to medium-sized evergreen tree native to most of central and eastern Canada and the Northeastern United States. It is popularly used as a Christmas tree, celebrated for its conical shape, green needles and fresh pine fragrance. Native Americans used Balsam Fir for medicinal and therapeutic purposes for thousands of years; it contains vitamin C, which has been studied for its effects on bacterial and viral infections.