The Shamrock plant is Ireland's national symbol, derivative of the Irish seamróg, meaning "young clover." Traditionally worn by the Irish and the Irish-for-a Day on St. Patrick's Day, its origins date far back to Saint Patrick himself.
St. Patrick used the shamrock as a way to teach the Christian doctrine of the Holy Trinity-that God was composed of three entities: the Father, the Son and the Holy Spirit, however each encompassed the others and come together in one meaning, just as the leaves on a shamrock converge with a single stem.
Typically consisting of 3 leaves, it is a rare occurrence when one discovers a 4-leaf clover. Universally accepted as a symbol of good luck, the four leaf clover remains a extraordinary discovery that will yield good fortune for the remainder of the finder's existence. For this reason, the four leaf clover is a symbol for luck and happiness in Ireland and its meaning is globally known around the world.