White flowers such as white roses and lilies are used to stand for purity. They are also sometimes used in conjunction with references to the Virgin Mary for her own purity. Red roses in Christianity stand for love or as a sign of Christ’s blood. Church altars are often decorated with bouquets or vases of flowers, especially on significant days such as Easter and Christmas. Flowers play a large role at Christian funerals, baptisms and other special personal events.
Christian brides walk down the aisle with a bouquet of flowers as a token of fertility, while in earlier times it was common for them to wear a wreath or garland of flowers around their heads. More on flowers in Christianity.