General Information

  • Category- Flower
  • Binomial Name- Hypericum perforatum
  • Common Names- Hypericum perforatum
  • Spread- 18-24 inches**
  • Height- 12-96 inches**
  • Average Production- 100-120 flowers per plant
  • Days to Maturity- 42-98 days*

Environmental Requirements

  • Soil- sand, clay, rocky soil, or loam
  • Soil pH- 7.0-8.0
  • Soil Moisture- 10%
  • Soil temperature-15°C
  • Climate temperature- 11°C
  • Sun Requirements- Full Sun
  • Best Time to Plant- mid-spring

Tips to Grow Saint John’s Wort

  1. Arrange good quality Saint John’s Wort cuttings or seeds.
  2. The soil should be well-draining and slightly acidic.
  3. Plant the seed in the soil. Once the seeds germinate, the plants should be ready for moving to a pot in about a month.
  4. Remove the plant from its container, try not to disturb the roots too much. Position the plant in the middle of the new pot.
  5. Fertilize during spring with controlled-release fertilizer (20-20-20) or liquid fertilizer according to label directions.
  6. After a year you can enjoy a good display in the pot.

** The values are standard values but might change a bit.

*To get flowers quickly, the users can buy plants from nursery.