Balsam, Fraser and Douglas Firs are excellent Christmas trees because of their superior needle retention and good fragrance. Balsam fir and Fraser Fir are very closely related while Douglas Fir is in another genus and is superior to the other two firs. However, these trees cost more too. Scotch Pine and White Pine are also very good but do not have the strong fragrance of the firs. Blue Spruce, White Spruce, Sand Pine and Red Cedar are also seen in the Christmas tree market.
Spruce trees tend to lose needles quickly.
Freshly cut trees hold their needles better and are more resistant to ignition. Bend the needles to determine the tree's freshness. They should be supple and springy to the touch. Bounce the butt of the tree on the ground to see if any needles drop. If more than a few needles drop, the tree is not fresh.