Today is Valentine's Day and sending someone a beautiful bouquet of flowers is a popular way of celebrating the day of love and romance. But do you know what each flower represents? Red roses are widely recognised as a symbol of passionate love. They are the most popular choice on Valentine's Day. A white rose represents eternal love, while a pink one is innocent love. A yellow rose is for friendship. Florists often put small flowers, like baby's breath and forget-me-nots, together with roses as they, too, convey love. Baby's breath represents ever-lasting love and a pure heart, while the name forget-me-not tells it all. The tulip, the national flower of Holland, is also popular. Red tulips are a declaration of love, while yellow ones suggest 'hopeless love' - that the couple may never be together. Sunflowers are also a favourite because of their bright blossoms. A boy who sends a girl a bouquet of sunflowers is saying: 'You are splendid.' The aster is a famous flower which appears in the literary masterpiece Faust, written by German Johann Wolfgang von Goethe (1749-1832). In the story, a girl plucks the petals of the flower one by one, to see whether a man loves her. She whispers 'He loves me, he loves me not' in turn until the final petal reveals the verdict. Camellia is another flower which represents love. Red camellias mean 'You're a flame in my heart', white camellias mean 'You're adorable' and pink camellias mean 'Longing for you'. Floral manager of agnes b fleuriste Janice Chan Ting-ting says the traditional pink and red roses are still most popular. 'It's safe, especially if a boy doesn't really know his girl's taste,' she says. 'But, big flowers like hydrangea and brassica are also very attractive.' The flower shop, with branches in Causeway Bay and Kowloon Tong, is promoting a bouquet of 11 roses for Valentine's Day. The idea behind this is that the 11 roses, plus the flower giver, makes it a 'perfect dozen', she says. In the case of roses, meanings can vary according to their number. For example, one rose - if the girl doesn't mind the 'small gift' - shows that 'You are the only one in my mind', while two represents a couple's love for each other. Three roses stands for 'I love you'. Seven roses means 'I miss you every day' and, similarly, 24 indicates 'I miss you round the clock'. Eight roses implies both an apology and love. Nine, 99 or 999 roses means that love is ever-lasting. The pronunciation of nine in Chinese is similar to that of 'lasting'. Some girls may be looking forward to receiving 108 roses, as the bouquet means 'Please marry me!' On the other hand, 17 roses means the end of a relationship. To extend the life of the flowers, Ms Chan suggests that girls unwrap their bouquets tomorrow, cut the tips of the stems and put the flowers in a vase with water.