1000 Seeds Scarlet Toothcup Ammannia coccinea Wetland Wildflower Rain Garden

Scarlet Toothcup (Ammannia coccinea) is a moisture-loving annual wildflower native to wetland edges, marshes, and floodplain habitats across much of North America. It is valued for its slender upright stems and small but vivid reddish-pink to scarlet flowers that open along the upper stem through the warmer months, creating a bright vertical accent in damp borders and water-wise plantings.

This species works well in rain gardens, bog gardens, bioswales, and the shallow margins of ponds where the soil stays consistently moist. It can also be grown in containers that are kept consistently wet. Plants typically flower in mid to late summer and may self-sow where conditions are favorable, providing an ongoing seasonal presence in suitable sites.
Species: Ammannia coccinea
Type: Annual wildflower
Plant Habit: Upright, branching
Sun: Full sun to partial shade
Soil: Moist to wet, loamy or sandy
Spacing: 8 to 12 inches
Notes: Prefers consistently moist soil; suitable for rain gardens and wetland plantings