The Christmas decorating just isn't complete until the Christmas Tree has been put up and decorated with lights and baubles. It's always the last thing to go up at my house and there is a very strict rule that Christmas Vacation may not be watched until the tree is being decorated. It's a good rule to have. It makes the frustrating task less stressful.
The custom of the Christmas Tree developed in early modern Germany with predecessors that can be traced to the 16th and possibly the 15th century. It acquired popularity beyond Germany during the second half of the 19th century.
POM POM TREE