St. John's wort
Hypericum perforatum
In Dutch: Sint-janskruid
PerennialsCollection: Native species
Properties
- Height
- 0.2 to 0.8 m
- Spread
- 0.5 to 1 m
- Full grown after
- 2 to 5 years
- Sun
- Full sun to partial shade
- Soil
- Dry and rich in nutrients, drains well
- Water
- Little: grows on dry soil too
- Maintenance
- Low: clear the dead stems once a year
- Flowers
- June to September, golden yellow
- For bees
- Yes: pollen, June to September
- Hay fever
- Not or weakly allergenic
- Leaves
- Drop in autumn
- Hardy
- Yes
- Native
- Yes
- Poisonous
- Mildly: the sap can make skin sensitive to sunlight
- Pricks or stings
- No
- Price, young
- About €2.50 to €4.09 each, in a small pot
- Price, grown
- About €6.50 each, from 10 plants, in a larger pot
Through the year
- Leaf
- April to October
- Flower
- June to September
- Fruit
- July to October