Hornleaf Riverweed
Podostemum ceratophyllum
Last reviewed: June 2026
Light
part sun
Water
high
Size
1"–12" H × 2"–18" W
Bloom
N/A
Native to
AL, AR, CT, GA and 19 more states
Hornleaf riverweed is an aquatic native plant that grows naturally on rocks in fast-flowing streams and rivers. This unusual perennial forms moss-like mats with finely divided, feathery foliage that remains submerged or semi-submerged in moving water.
In an HOA neighborhood
Hornleaf Riverweed 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.
- Requires flowing water habitat
- Not suitable for typical landscaping
- Only grows in streams and rivers
Wildlife value
This specialized aquatic plant provides habitat for stream insects and small fish. It helps maintain water quality and stream ecosystem health in its natural habitat.
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 Hornleaf Riverweed fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.