From the earliest times mistletoe has been one of the most magical, mysterious, and sacred plants of European folklore. It was considered to bestow life and fertility; a protection against poison; and an aphrodisiac. The mistletoe of the oak was especially sacred to the ancient Celtic Druids, according to a neat website named “The Holiday Spot”.
Kissing under the mistletoe is first found associated with the Greek festival of Saturnalia and later with primitive marriage rites. In Scandinavia, mistletoe was considered a plant of peace, under which enemies could declare a truce or warring spouses kiss and make-up.