Persephone is often depicted carrying a bunch of parsley. Ancient Greeks associated parsley with Death, and used it to decorate tombs, and in funeral ceremonies. They did not eat it and never grew it indoors, lest they bring death into the house, but they did use it as fodder for horses.
The Romans placed parsley on their plates to protect the food from contamination and ate it to sweeten their breath after meals. This is where its tradition as a garnish originated. They also tucked it into their togas for protection and wore it on their heads to protect them from inebriation.
European folklore says that only pregnant women and witches can grow parsley properly and that it should be planted on Good Friday for the best crop.
Uprooting parsley will bring bad luck to your household. It will also kill the plant. Parsley doesn’t like to be transplanted.
Medieval Europeans believed that you could kill someone by plucking a sprig of parsley while speaking his name.

Parsley is associated with Mercury and air and masculine in action. It is sacred to Persephone, Venus, and Aphrodite.
Parsley can be used in a ritual bath and in ritual incense associated with communication with spirits of the dead.
Wearing or eating parsley is supposed to protect against drunkenness and increase strength, vitality, and passion.
Parsley is also supposed to protect food from contamination.