| Scientific Name: | Hypericum perforatum |
| Common Name: | St. John's wort |
| Family Name: | Hypericaceae |
| Origin: | Africa, Europe |
| Hardiness Zone: | Zone 4: (-34 to -29 °C) |
| Plant Type: | Weed (horticultural) |
| Mature Size: | 0.7 - 1.3m x 0.3 - 0.6m (height x width) |
| Habit: | Stiffly upright |
| Form: | Oval - vertical |
| Texture: | Fine |
| Landscape Uses: | Medicinal plant |
| Exposure: | Full sun |
| Soil or Media: | Rocky or gravelly or dry, Well-drained |
| Leaves: | Simple, Opposite, Elliptic, Ovate, Entire |
| Flowers: | Cyme, Yellow, Aug-Sep-Oct |
| Fruit: | Capsule, Brown, Sep-Oct |
| Key ID Features: | |
| Leaves opposite on tall upright stems, when held up to light small clear dots or perforations can be seen. | |