Significance of the Roses. The rose, beautiful in all of its colours, is the most popular flower in the world. They are the very symbols of love and beauty, and are shrouded with layers of rich symbolism. Whether or not you particularly like roses, you cannot deny that roses are widely used to show heart-felt sentiments and at important events such as weddings. The origins of the cultivated rose are speculated to be Northern Persia, on the Caspian, or Faristan on the Gulf of Persia.