The word holly translates from the Old English as holegn, Old Norse as hulfr, German as hulst, French as houx, and welsh as celyn. They all literally translate to holly, but the actual origin is believed to have come from Proto-Ino-European meaning "prickly or to prick". The Teutonic/Druids traditionally used holly and other evergreens in their homes to ward away bad winter weather and evil spirits. It's also associated with men and is believed to bring men good luck and protection. Its bright green and red colors made it a natural symbol of rebirth and life in the winter months of Northern Europe.

One of the greatest dangers related to the Christmas tree was burning candles. They made the tree beautiful to look at, however, it was necessary to keep buckets of water just in case a fire broke out (they didn't have dripless candles in those days). The tradition of using small candles to light up the Christmas tree dates back to at least the middle of the 17th century. It wasn't until two centuries later that the tradition became established, first in Germany and then spreading to Eastern Europe. Candles were glued to a tree branch or attached by pins. Candleholders were first used for Christmas candles around 1890. Between 1902 and 1914, small lanterns and glass balls were used to hold the candles. The idea of electric Christmas tree lights is credited to Ralph E. Morris, an employee of the New England Telephone Co. in 1895. He got the idea from the lights which were used to light up the switchboards.

The ancient Druids believed mistletoe to be the symbol of eternal life. The Romans believed it the symbol of peace. Kissing under the mistletoe was a Roman custom also.

There was a Mexican legend about a small boy who felt badly that he had nothing to give to the Christ child except for a prayer. That night the first plant that sprang up in homage of the birth was a brilliant red and green one. Dr. Joel Roberts Poinsett, the American ambassador to Mexico had an interest in botany and brought back this plant. It was named after him.