Which plant, also known as hypericum, is traditionally gathered on Midsummer's Eve?

The plant also known as hypericum that is traditionally gathered on Midsummer’s Eve is St. John’s wort.

St. John’s wort is the common name for Hypericum perforatum, a perennial flowering herb with bright yellow flowers. Its leaves can appear dotted or perforated when held to the light because they contain translucent glands. The species name perforatum refers to this distinctive visual effect.

The plant’s seasonal name reflects the timing of its traditional harvest. Flowers and buds were gathered around the Midsummer festival, which was later linked in Christian Europe with the Feast of Saint John the Baptist on June 24. Folk traditions held that collecting the herb at this time increased its healing or magical power.

Historically, St. John’s wort was hung over doors and stable entrances to protect people and livestock from illness or evil spirits. It was also included in protective rituals and sometimes burned in festival fires. These customs belong to folklore and traditional medicine, not proof of supernatural effects.

A modern caution is that St. John’s wort is biologically active and can interact with medicines, including some antidepressants, contraceptives, and transplant drugs. “Hypericum” can refer to the wider genus, but this trivia answer specifically means the species Hypericum perforatum.