Photo: Sandy WolkenbergCC BY 4.0via iNaturalistresized / cropped
Thyme-leaved Sandwort Plant Care
Arenaria serpyllifolia L.
Updated · Sources · How we source care data
This delicate plant is characterized by its tiny, oval-shaped leaves that grow in dense mats. Originating from Europe and Asia, Arenaria serpyllifolia is sought after by plant collectors for its ability to thrive in rocky, dry soils, making it a perfect addition to rock gardens.
Every 7–10 days
Full sun to partial shade
50–75°F
40–60%
At a glance
How do you care for Thyme-leaved Sandwort?
Water Thyme-leaved Sandwort every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to partial shade. It prefers temperatures of 50–75°F (10–24°C) and 40–60% humidity. Fertilize it every month during the growing season.
What Is the Thyme-leaved Sandwort?
Thyme-leaved Sandwort (Arenaria serpyllifolia) belongs to the Caryophyllaceae family within the Arenaria genus. Thyme-leaved Sandwort is native to Europe, North America. Thyme-leaved Sandwort is also known as Tiny Sandwort, Common Sandwort.
Thyme-leaved Sandwort displays a low mat-forming ground cover growth habit, reaching up to 0.1 ft tall with a spread of approximately 0.5 ft. Thyme-leaved Sandwort produces small white or pink flowers in clusters.
Leaf size: approximately 0.5 inches.
How Often Should You Water a Thyme-leaved Sandwort?
Arenaria serpyllifolia requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–10 days
Let soil partially dry between waterings
What Light Does the Thyme-leaved Sandwort Need?
Thyme-leaved Sandwort thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Thyme-leaved Sandwort Prefer?
Arenaria serpyllifolia grows best at temperatures of 50–75°F. Thyme-leaved Sandwort prefers humidity levels of 40–60%.
Temperature
50–75°F
Humidity
40–60%
What Soil Mix Works Best for a Thyme-leaved Sandwort?
Well-draining sandy soil with added organic matter like compost or peat moss. Good drainage is essential for Thyme-leaved Sandwort to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Thyme-leaved Sandwort?
Feed Thyme-leaved Sandwort every month during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every month
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Thyme-leaved Sandwort?
Divide and replant every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Thyme-leaved Sandwort?
Thyme-leaved Sandwort can be propagated through seeds, division of clumps. Similar propagation techniques also apply to large-flowered sandwort plant care, which shares the same genus.
Is the Thyme-leaved Sandwort Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Thyme-leaved Sandwort, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Thyme-leaved Sandwort?
Thyme-leaved Sandwort is susceptible to aphids, spider mites, slugs. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Thyme-leaved Sandwort Need?
Thyme-leaved Sandwort grows outdoors in USDA Zone 4a – 8b. It survives winters down to planting zone 4a. Thyme-leaved Sandwort is native to Europe, North America.
Hardiness Zone
Zone 4a – 8b
Keep exploring plants
Thyme-leaved Sandwort is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Arenaria genus — compare its care with other Arenaria species on PlantoScan.
Arenaria is part of the Caryophyllaceae plant family — browse all Caryophyllaceae genera and species.
Thyme-leaved Sandwort thrives in bright light and direct sun — see other bright-light plants.
More Arenaria Species
Other Arenaria species in PlantoScan's care catalogue share similar watering, light, and soil preferences:
Sources
- Scientific name & taxonomy: Arenaria serpyllifolia L., family Caryophyllaceae (first published in Sp. Pl. : 423 (1753)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Thyme-leaved Sandwort, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Photo: Sandy Wolkenberg, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 4a – 8b, estimated from the plant's typical growing conditions.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
Identify Plants Like the
Thyme-leaved Sandwort Instantly
Scan any plant with your phone camera and get instant ID, care tips, water and fertilizer reminders, and health checks — all in one app.
Free
to download
iOS & Android
platforms
Light & dark
mode
100,000+
species