According to Teleflora, different flowers symbolize various sentiments and mythologies derived from the flowers' names and characteristics. Flowers actually have a language of their own, called floriography, through which all flowers convey their own meanings or messages.
Teleflora describes the symbolism of a few of the most well-known flowers. Red roses symbolize passion, love and romance, and are linked with the Greek goddess of love, Aphrodite. Lilies symbolize chastity, virtue, devotion and innocence; they are often associated with funerals to symbolize a soul's newfound innocence after death. Carnations symbolize love and luck. Each of these flowers holds rich meanings that date back to their earliest mythologies.