When a single red rose is sent with a single white rose, it symbolizes unity and marriage. Red roses represent love and passion, while white roses represent innocence and purity. Two roses that have been entwined can be given as a proposal for marriage.
The color of a rose and the number of roses sent can have many meanings. Red roses can represent romance, love, respect, beauty, courage, passion or sincerity. White roses are symbols of reverence, innocence, secrecy, purity, humility, youthfulness, silence and heaven. When roses are sent as a bouquet mixed with both red and white roses, or if just one of each color is sent, it signifies unification.