Language of flowers
Filed under “stuff I never knew I never knew”.
Floriography (language of flowers) is a means of cryptological communication through the use or arrangement of flowers. […] Specific floral arrangements were used to send a coded message to the recipient, allowing the sender to express feelings of romance and courtship which could not be spoken aloud in Victorian society. Armed with floral dictionaries, Victorians often exchanged small “talking bouquets” or “word poesy” which could be worn or carried as a fashion accessory.
(Wikipedia)