trefle.io · Taken Jun 6, 2021 by Petra Stašková (cc-by-sa)
Caryophyllaceae
Thyme-leaf sandwort
Arenaria serpyllifolia
Also known as Thyme-leaved sandwort, Thyme sandwort, Arenaria serpyllifolia, Stellaria serpyllifolia
Zones 4–9Sun Partial SunWater LowCare Low
Native Plants · Sandwort · Rock Garden · Alpine · Tiny Flowers · Drought Tolerant · Poor Soil · Annual · Ground Cover
Pet-safeBeginner-friendlyAttracts pollinators
Currently out of stock everywhereStock updated 9/6/2026
This tiny annual thrives in poor, sandy soils and requires minimal water once established. Perfect for rock gardens, crevices, and areas where other plants struggle. Self-seeds readily in suitable conditions.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water lightly when soil is completely dry · Every 14-21 days
- Maintenance
- Low
- Soil
- sandy loam
- Soil pH
- 6–7.5
- Temperature
- -30°F to 85°F
- Cycle
- Perennial
- Propagation
- Seed
Hardiness
USDA 4a-9b
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Form & growth
Mature size and habit
- Mature height
- 2 in – 8 in
- Spread
- 12 in
- Spacing
- 3 in apart
- Growth rate
- Moderate
- Root depth
- Shallow
- Flowers
- No
- Foliage
- Fine
Ecology & origin
Where it belongs and what it brings
- Native to
- Afghanistan, Alabama, Albania, Alberta, Algeria, Altay, Argentina Northeast, Argentina South, Arkansas, Austria, Baleares, Baltic States, Belarus, Belgium, Bermuda, Bolivia, British Columbia, Bulgaria, California, Canary Is.
- Attracts
- Bees
Sources: trefle, usda
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