That's when Jesus was born.
That's when it was celebrated in the bible.
That's when Christmas trees are in season.
It was chosen at random.
It was chosen to coincide with an established pagan holiday.
It is associated with a Scandinavian love goddess.
It makes your mouth pucker.
It was used in druid wedding rituals.
It was an old Jewish practice.
None of the above
The pointed leaves represent the Christmas star.
The early church band mistletoe, so holly was substituted.
Holly was used as the first Christmas tree.
The red berries signify the Crucifixion.
The red berries are a Christmas color.