Um, I was interested myself and looked for some info about the laurel. A copy/pasted paragraph from Wikipee:
Symbolism
Bay laurel was used to fashion the laurel wreath of ancient Greece, a symbol of highest status. A wreath of bay laurels was given as the prize at the Pythian Games because the games were in honor of Apollo, and the laurel was one of his symbols.
Ovid tells the story that laurel tree was first formed when the nymph Daphne was changed into a laurel tree because of Apollo's pursuit of her. Daphne is the Greek name for the tree.[10]
The symbolism carried over to Roman culture, which held the laurel as a symbol of victory.[11] It is also the source of the words baccalaureate and poet laureate, as well as the expressions "assume the laurel" and "resting on one's laurels".
In the Bible, the laurel is often an emblem of prosperity and fame. In Christian tradition, it symbolizes the resurrection of Christ.
In Chinese folklore, there is a great laurel tree on the moon, and the Chinese name for the laurel, (Chinese: 月桂), literally translates to "moon-laurel". This is the subject of a story of Wu Gang, a man who aspired to immortality and neglected his work. When the deities discovered this, they sentenced Wu Gang to fell the laurel tree, whereupon he could join the ranks of the deities; however, since the laurel regenerated immediately when cut, it could never be felled. The phrase (Chinese: 吴刚伐木) ("Wu Gang chops the tree") is sometimes used to refer to endless toil, analogous to the legend of Sisyphus in Greek mythology.
Think (not sure) the wreath was made of the Laurus nobilis variant though. My garden hedge is different.. um, even poisonous, I though.