When did tradition of a tree at Christmas take root?

CHARLES DICKENS, a writer associated with Christmas, said: “I have been looking on, this evening, at a merry company of children assembled round that pretty German toy, a Christmas tree, towering high above their heads and brilliantly lighted by a multitude of little tapers.”
Regardless of how the season of goodwill has been transformed down the decades, the Christmas tree is an unbroken link to all our childhoods. Whether your tree is tinsel and pulled annually from the attic, a mock stock with weird lime leaves, or real with pine needle and aromatic branches brushing the ceiling, it’s not Christmas until the tree is up.