Photo: Carol Ann McCormickCC BY 4.0via iNaturalistresized / cropped
Large-flowered Sandwort Plant Care
Arenaria grandiflora L.
Updated · Sources · How we source care data
Arenaria grandiflora, also known as large-flowered sandwort, is a low-growing perennial with bright green foliage and delicate white flowers that bloom in the spring. Its compact growth habit makes it perfect for rock gardens or as ground cover.
Every 7–10 days
Full sun to partial shade
50–75°F
40–60%
At a glance
How do you care for Large-flowered Sandwort?
Water Large-flowered 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 2 months during the growing season.
Where Is the Large-flowered Sandwort Native To?
- Albania
- Algeria
- Angola
- Austria
- Benin
- Bosnia and Herzegovina
- Botswana
- Bulgaria
- Burkina Faso
- Burundi
- Cameroon
- Cape Verde
- Central African Republic
- Chad
- Côte d'Ivoire
- Croatia
- Cyprus
- Czechia
- Djibouti
- DR Congo
- Egypt
- Equatorial Guinea
- Eritrea
- Eswatini
- Ethiopia
- Gabon
- Germany
- Ghana
- Greece
- Guinea
- Guinea-Bissau
- Hungary
- Italy
- Kenya
- Lesotho
- Liberia
- Libya
- Madagascar
- Malawi
- Mali
- Malta
- Mauritania
- Montenegro
- Morocco
- Mozambique
- Namibia
- Niger
- Nigeria
- North Macedonia
- Poland
- Portugal
- Republic of the Congo
- Rwanda
- Sao Tome and Principe
- Senegal
- Serbia
- Sierra Leone
- Slovakia
- Slovenia
- Somalia
- South Africa
- South Sudan
- Spain
- Sudan
- Switzerland
- Tanzania
- The Gambia
- Togo
- Tunisia
- Uganda
- Zambia
- Zimbabwe
What Is the Large-flowered Sandwort?
Large-flowered Sandwort (Arenaria grandiflora) belongs to the Caryophyllaceae family within the Arenaria genus. Large-flowered Sandwort is native to central and southern Europe, and north-western Africa. Large-flowered Sandwort is also known as Grandiflora Sandwort.
Large-flowered 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. Large-flowered Sandwort produces small white or pink flowers in clusters.
Leaf size: approximately 0.5 inches.
How Often Should You Water a Large-flowered Sandwort?
Arenaria grandiflora 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 Large-flowered Sandwort Need?
Large-flowered Sandwort thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Large-flowered Sandwort Prefer?
Arenaria grandiflora grows best at temperatures of 50–75°F. Large-flowered Sandwort prefers humidity levels of 40–60%.
Temperature
50–75°F
Humidity
40–60%
What Soil Mix Works Best for a Large-flowered Sandwort?
Well-draining sandy soil with added organic matter like compost or peat moss. Good drainage is essential for Large-flowered Sandwort to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Large-flowered Sandwort?
Feed Large-flowered Sandwort every 2 months 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 2 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Large-flowered 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 Large-flowered Sandwort?
Large-flowered Sandwort can be propagated through seeds, division of clumps. Similar propagation techniques also apply to norwegian sandwort plant care, which shares the same genus.
Is the Large-flowered Sandwort Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Large-flowered 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 Large-flowered Sandwort?
Large-flowered 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 Large-flowered Sandwort Need?
Large-flowered Sandwort grows outdoors in USDA Zone 5a – 8b. It survives winters down to planting zone 5a. Large-flowered Sandwort is native to central and southern Europe, and north-western Africa.
Hardiness Zone
Zone 5a – 8b
Keep exploring plants
Large-flowered 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.
Large-flowered 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 grandiflora L., family Caryophyllaceae (first published in Syst. Nat. ed. 10 , 2: 1034 (1759)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Large-flowered 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: Carol Ann McCormick, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 5a – 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.
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