Hypericum perforatum, known in Greek as St. John's Wort, is a perennial plant with small yellow flowers that bloom mainly in the summer. It belongs to the Hypericaceae family and grows wild in many areas of Europe, including Greece.

It is particularly known for its medicinal properties, as it is traditionally used to treat mild forms of anxiety and depression, as well as to heal wounds. Its extract contains active substances, such as hypericin, which contribute to its therapeutic action.