Smooth Buttonweed
Spermacoce glabra
Last reviewed: June 2026
Light
full sun
Water
medium
Size
6"–24" H × 6"–18" W
Bloom
Jun, Jul, Aug, Sep
Native to
AL, AR, FL, GA and 15 more states
Pollinators
bees, beetles
Browse plants for this ecoregion
Smooth buttonweed is a low-growing native perennial that forms neat mounds of small, smooth leaves. It produces tiny white flowers clustered in button-like heads from summer through early fall. This plant thrives in full sun with moderate water needs.
In an HOA neighborhood
Smooth Buttonweed 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.
- Common name includes 'weed' which creates negative perception
- Low growth habit may appear unkempt to traditional landscaping standards
- Small flowers lack visual impact for formal settings
Wildlife value
The small white flowers attract bees and beneficial beetles throughout the long blooming season. Its compact growth provides shelter for small beneficial insects.
Common questions
- How much sun does Smooth Buttonweed need?
- Smooth Buttonweed grows best in full sun conditions.
- When does Smooth Buttonweed bloom?
- Smooth Buttonweed blooms in June, July, August, and September.
- Where is Smooth Buttonweed native?
- Smooth Buttonweed (Spermacoce glabra) is native to AL, AR, FL, GA and 15 more states, per the USDA PLANTS Database and regional native plant society lists.
- What pollinators does Smooth Buttonweed attract?
- Smooth Buttonweed draws bees and beetles.
- Is Smooth Buttonweed HOA-friendly?
- Smooth Buttonweed 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 Smooth Buttonweed? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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