Douglas Fir
The hardy "blue" strain is widely used as a Christmas tree in the Northeast. Its lush, blue-green foliage, with needles about one inch in length, is very attractive. Its sturdy branching and outstanding needle retention make this evergreen a holiday favorite.
Canaan Fir
This tree is a genetic variation of traditional Balsam Fir.  Its needles tend to be longer, about one inch in length, and vary more in color.  Its foliage, however, can often retain the bottlebrush appearance of Fraser Fir, its southern counterpart.  Relatively new to the Christmas tree industry, its popularity continues to rise