Myths, folklore & symbolism
rosemary: A spicy small shrub of Mediterranean countries, the Romans often burned it during sacrifices for its fragrance. In folk customs, rosemary was regarded as a protective agent against illnesses and evil spirits, and in this sense it was used particularly at births, weddings, and deaths.

As a hardy, evergreen plant, rosemary is an old symbol of love, fidelity, fertility, and immortality (when associated with the dead); bridal wreaths were often made of rosemary before myrtle was used. (Herder)