What Soil Is Best for square-stalked St John's wort?
- Soil type
- Chalk · Clay · Loam · Sand
- Soil pH
- Acid · Alkaline · Neutral

square-stalked St John's wort · Hypericum tetrapterum
Also known as: hard hay; spotted St John's wort; St Peter's wort
Grow in any poor to moderately fertile soil that does not dry out