According to multiple sources, the rose is considered the most popular flower in the world. It is praised for its fresh, delicate smell and is often associated with love and romance. Other popular flowers include the sunflower, which is known for its bright and cheerful appearance, and the tulip, which comes in many colors and has been popular since the 17th century. Daisies are also a popular choice, as they are known for their natural beauty and symbolize innocence and purity.