Toothcup
Ammannia coccinea
Last reviewed: June 2026
Light
full sun
Water
high
Size
6"–24" H × 4"–12" W
Bloom
Jun, Jul, Aug, Sep
Native to
AL, AR, AZ, CA and 28 more states
Pollinators
bees
Browse plants for this ecoregion
Toothcup is a compact annual wildflower that thrives in wet soils and produces small pink to red flowers throughout summer and fall. This native plant naturally grows in marshes, pond edges, and other consistently moist areas. It requires constant moisture to perform well and may struggle in typical garden conditions without supplemental watering.
In an HOA neighborhood
Toothcup takes more care to keep looking intentional in a front yard. Maintenance level: high. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Very informal appearance resembles a weed
- Requires constantly wet soil which is unusual for landscaping
- Annual nature means gaps and bare spots each spring
Wildlife value
The small flowers attract bees and other pollinators during its long blooming period from June through September.
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.
Does Toothcup fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.