Woolly sandwort (Arenaria tomentosa)
Care, watering, light and tips for Woolly sandwort on Floravia.
Quick facts
- Family: Caryophyllaceae
- Difficulty: Moderate care
- Watering: every 7 days
- Light: Partial shade
- Temperature: 10–30 °C
About Woolly sandwort
Arenaria tomentosa, also known as Woolly Sandwort, is a low-growing perennial plant that forms dense mats of silvery, finely hairy foliage. During summer, it produces small, star-shaped white flowers, creating a beautiful contrast with its leaves. It is ideal for rock gardens, path edges, or as ground cover in alpine settings, adding texture and brightness.
Native range
Mountainous regions of Southern and Central Europe.
Care tips
It requires full sun and well-drained soil, preferably sandy or gravelly, to prevent waterlogging, which can be fatal. Watering should be moderate, allowing the substrate to dry out completely between waterings, as it is drought-tolerant once established. Avoid excessive moisture, especially in winter, to prevent root rot. A common mistake is planting it in heavy, clayey soils, which compromises its development.
How to save a dying Woolly sandwort
- Warning signs
- Soft, yellowing, or moldy leaves; stunted growth. Soft, dark roots.
- First aid
- Remove damaged leaves. Repot into well-draining substrate, check roots. Drastically reduce watering.
- What kills it
- Overwatering and heavy soil. It doesn't tolerate waterlogging or constant root moisture.
- Can it be saved?
- Yes, if roots aren't completely rotted. Act quickly to prevent total decay.