Origin of the tradition.
As far as traditions go, nobody actually knows where and when it originated. But people have various theories and believes which is linked to the mistletoe tradition.
According to the Celtic Druids who live din the 1st century AD, this plant was a symbol of vivacity and hence is considered as a plant which increases life and fertility. The fact that it remains green while all other plants are covered with white snow and shed their leaves led this belief to be more prominent.
