What does a Christmas tree represents?

Back in ancient times, many evergreens, such as "holly, butcher's broom, laurel and branches of pine or fir were considered to have magical or medicinal powers that would ward off illness." "On Christmas Eve, 24 December, Adam and Eve would be commemorated with the highly popular episode of the Tree of the earthly Paradise . . . The tree ought to have been an Apple tree, but since an Apple tree would have been inappropriate in winter, a fir tree was set on the stage and some Apples put on its branches or, to symbolize the future coming of Redemption, wafers prepared with crushed biscuits in special moulds that were symbols of the Eucharistic presence of Jesus, as well as sweets and gifts for children." What about after that time?

Mentioning that the tradition of using a Christmas tree first started in Germany in the 16th century, L'OsservatoreRomano noted: "Italy was one of the last countries to accept the Christmas tree, partly because of a rather widespread rumour that the use of Christmas trees was a Protestant practice and should thus be replaced by the crib [the Nativity scene]." Pope Paul VI "began the tradition of setting up [in St. Peter's Square, Rome] a massive Christmas tree" near the Nativity scene.