Analysis of information sources in references of the Wikipedia article "Christmas decoration" in English language version.
According to the tradition of the 12 days of Christmas (explained above), January 6 is the earliest you should be taking down your Christmas tree. According to the legend, bad luck will befall those who stop the Christmas cheer any earlier.
The eight-pointed star became a popular manufactured Christmas ornament around the 1840s and many people place a star on the top of their Christmas tree to represent the Star of Bethlehem.
Any Christmas decorations not taken down by Twelfth Night (January 5th) should be left up until Candlemas Day and then taken down.
Christmas is the occasional of family reunions. Grandmother always has the place of honor. As the time approaches for enjoying the tree, she gathers her grandchildren about her, to tell them the story of the Christ child, with the meaning of the Christ child, with the meaning of the Christmas tree; how the evergreen is meant to represent the life everlasting, the candle lights to recall the light of the world, and the star at the top of the tree is to remind them of the star of Bethlehem.