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Thyme-leaf Sandwort

Arenaria serpyllifolia

Last reviewed: June 2026

Thyme-leaf Sandwort (Arenaria serpyllifolia)
Photo: Amédée Masclef / Wikimedia Commons (Public domain)

Light

full sun

Water

low

Size

2"–8" H × 4"–12" W

Bloom

May, Jun, Jul

Native to

MI

Pollinators

bees, beetles

Thyme-leaf sandwort is a low-growing annual wildflower that forms small mats of tiny leaves and delicate white flowers. This diminutive plant blooms from May through July and thrives in sunny, dry conditions. It naturally grows in sandy or rocky soils and requires minimal water once established.

In an HOA neighborhood

Thyme-leaf Sandwort takes more care to keep looking intentional in a front yard. Maintenance level: low. Consider it for backyard or mid-zone beds rather than the street edge.

Works well in: backyard only.

  • Very small size makes it appear weedy in formal landscapes
  • Annual nature means it dies back completely each year
  • Can look sparse or patchy in maintained garden beds

Wildlife value

The small white flowers attract native bees and beetles during the summer months. As an annual, it provides seasonal nectar resources for small pollinators.

Common questions

How much sun does Thyme-leaf Sandwort need?
Thyme-leaf Sandwort grows best in full sun conditions.
When does Thyme-leaf Sandwort bloom?
Thyme-leaf Sandwort blooms in May, June, and July.
Where is Thyme-leaf Sandwort native?
Thyme-leaf Sandwort (Arenaria serpyllifolia) is native to MI, per the USDA PLANTS Database and regional native plant society lists.
What pollinators does Thyme-leaf Sandwort attract?
Thyme-leaf Sandwort draws bees and beetles.
Is Thyme-leaf Sandwort HOA-friendly?
Thyme-leaf Sandwort takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.

Native range data from the USDA PLANTS Database and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

Ready to grow Thyme-leaf Sandwort? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

Not sure where to start? Take the 2-minute yard quiz