what are the types of xmas tree?
['Balsam Fir. The balsam fir is an evergreen tree best known for its conical shape and dense, dark-green leaves that are flat and needle-like. ... ', 'Fraser Fir. ... ', 'Canaan Fir. ... ', 'Douglas Fir. ... ', 'Grand Fir. ... ', 'Noble Fir. ... ', 'Concolor Fir. ... ', 'White Pine.']