Swamp Sandwort Plant Care
Arenaria paludicola B.L.Rob.
Updated · Sources · How we source care data
Arenaria paludicola is a species of flowering plant in the family Caryophyllaceae known by the common names marsh sandwort and swamp sandwort. The plant grows in wet areas, such as marsh and bog.
Every 7–10 days
Full sun to partial shade
50–75°F
40–60%
At a glance
How do you care for Swamp Sandwort?
Water Swamp 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.
What Is the Swamp Sandwort?
Swamp Sandwort (Arenaria paludicola) belongs to the Caryophyllaceae family within the Arenaria genus.
Swamp 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. Swamp Sandwort produces small white or pink flowers in clusters.
Leaf size: approximately 0.5 inches.
How Often Should You Water a Swamp Sandwort?
Arenaria paludicola 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 Swamp Sandwort Need?
Swamp Sandwort thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Swamp Sandwort Prefer?
Arenaria paludicola grows best at temperatures of 50–75°F. Swamp Sandwort prefers humidity levels of 40–60%.
Temperature
50–75°F
Humidity
40–60%
What Soil Mix Works Best for a Swamp Sandwort?
Well-draining sandy soil with added organic matter like compost or peat moss. Good drainage is essential for Swamp Sandwort to prevent waterlogging, which leads to root rot and fungal issues.
How Do You Repot a Swamp 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 Swamp Sandwort?
Swamp 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 Swamp Sandwort Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Swamp 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 Swamp Sandwort?
Swamp 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 Swamp Sandwort Need?
Swamp Sandwort grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. In cooler regions, grow Swamp Sandwort as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Swamp 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.
Swamp 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 paludicola B.L.Rob., family Caryophyllaceae (first published in Proc. Amer. Acad. Arts 29: 298 (1894)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Swamp 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.
- Hardiness zone: USDA Zone 12a, calculated from the plant's minimum temperature.
- 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.
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