The legend stems from Norse mythology, and says that mistletoe was the
sacred plant of Frigga, goddess of love and the mother of Balder, the god
of the summer sun. Balder had a dream of death which greatly alarmed his
mother, for should he die, all life on earth would end. In an attempt to
keep this from happening, Frigga went at once to air, fire, water, earth,
and every animal and plant seeking a promise that no harm would come to
her son. Balder now could not be
hurt by anything on earth or under the earth.
But Balder had one enemy, Loki, god of evil and he knew of one plant that
Frigga had overlooked in her quest to keep her son safe. It grew neither
on the earth nor under the earth, but on apple and oak trees. It
was lowly mistletoe. So Loki made an arrow tip of the mistletoe, gave it
to the blind god of winter, Hoder, who shot it, striking Balder dead. The
sky paled and all things in earth and heaven wept for the sun god.
For three days each element tried to bring Balder back to life. He was
finally restored by Frigga, the goddess and his mother. It is said
the tears she shed for her son turned into the pearly white berries on
the mistletoe plant and in her joy Frigga kissed everyone who passed beneath
the tree on which it grew.
The story ends with a decree that who should ever stand under the humble
mistletoe, no harm should befall them, only a kiss, a token of love.