St John's wort (Hypericum perforatum) — John’s wort, gathered at the solstice by tradition. Its leaves are dotted with translucent glands, and crushed flowers leave a blood-red oil. Flowering tops are cut in June; macerated in oil, they give the red oil known for centuries.
Botanical name: Hypericum perforatum
Sowing: under cover, 45–55 days before planting out
Spacing: 30 cm between plants, 40 cm between rows
Germination: 14–21 days at 18–20 °C
Height: 40–80 cm
Contents: 0.1 g
| Life cycle | Perennial |
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