The poinsettia is directly attributable to the Christmas story, as in the Gospel of Matthew describes. The Star of Bethlehem, the place where the King of the Jews would be born. The three wise men of Matthew were to follow the star to the baby Jesus from King Herod to visit the birthplace of Herod then reveal that the child was slain. The wise men did not return to Herod, so they gave the order to the Infanticide in Bethlehem so the prophesied Messiah would die here. The Savior of the Jewish people would be as forthcoming reign, Herod and considered it a threat to its influence. This is the origin of this star kwaadschikse theologically determined.
The lighting of candles and other light has also much to old pre-Christian midwinter traditions it. Even if the plant is Euphorbia pulcherrima poinsettia known for its red flowers that look like a star.
See also: International Flower Delivery, Florist