Découvrir le pot aux roses, literally “to discover the pot of roses”, means to find out a secret, uncover a plot. Its origin is not very clear. What is sure, however, is that the rose has been the symbol of the secret since Ancient Greece. According to the legend, Aphrodite gave her son Eros, the god of love, a Rose. Eros gave it then to Harpocrates, the God of Silence, to ensure that Aphrodite’s indiscretions would be kept secret.
In the Ancient Rome too, the rose had that same symbolic meaning. The Romans used to decorate banquet rooms with roses and remind participants that everything happening there was sub rosa, which means “in secret”.