Fourleaf allseed (Polycarpon tetraphyllum)
Care, watering, light and tips for Fourleaf allseed on Floravia.
Quick facts
- Family: Caryophyllaceae
- Difficulty: Moderate care
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
About Fourleaf allseed
Polycarpon tetraphyllum, commonly known as Fourleaf Allseed, is a small annual plant from the Caryophyllaceae family that forms low, dense mats. Its tiny green leaves and inconspicuous white flowers make it ideal for covering small areas in rock gardens, between paving stones, or as part of a low-maintenance garden. It adds a touch of delicate, natural greenery to spaces where larger plants might not thrive.
Native range
Mediterranean region and Macaronesia
Care tips
It prefers full sun to partial shade and tolerates a wide range of soils, though it favors well-drained and slightly sandy ones. Watering should be moderate, allowing the substrate to dry out slightly between waterings, as it is quite drought-tolerant once established. Avoid overwatering, which is the most common mistake and can lead to root rot. It does not require regular fertilization, but poor soil may benefit from a light feed in spring.
How to save a dying Fourleaf allseed
- Warning signs
- Wilted, yellowing or reddish leaves, soft and drooping stems. Stunted or very slow growth.
- First aid
- Check watering; it's often due to lack of water. If soil is dry, water thoroughly. If waterlogged, repot into fresh, dry soil.
- What kills it
- Prolonged drought is the main culprit, as it prefers consistent moisture. Excessive direct sun in summer also damages it.
- Can it be saved?
- Yes, it often recovers well if watering issues are corrected promptly. It's quite resilient.