I read the following online: Nimrod married his mother whose name Semiramis. After Nimrod was killed his mother-wife propagated the evil throne of the survival of Nimrod as a spirit-being. She claimed a full-grown evergreen tree sprang overnight from a dead tree stump which symbolized the springing forth unto new life of the dead Nimrod. On each anniversary of his birth she claimed Nimrod would visit the evergreen tree and leave gifts upon it and it’s said to be his birthday.
The winter solstice (December) was the time which all the sun gods from Osiris, Bacchus, Adonis, Jupiter, Mithra, Tammuz (and finally Jesus) celebrated their birthdays.
The pine tree represented Adonis. The holly represented Saturn. The mistletoe came from the Druids. The Druids used candles on the tree to represent the newborn sun-gods fire.
Holly was thought to drive out evil spirits. Mistletoe was believed to heal.
Just a little bit of information I was reading online. I was curious about where the Christmas tree came from. There’s probably some phallic worship going on also with the Christmas tree. I wonder if this is why people plant trees after someone dies too?