Water Star-grass
Heteranthera dubia
Last reviewed: June 2026
Light
full sun
Water
high
Size
4"–24" H × 6"–18" W
Bloom
Jun, Jul, Aug, Sep
Native to
AL, AR, AZ, CA and 33 more states
Pollinators
bees, beetles
Browse plants for this ecoregion
Water star-grass is an aquatic perennial that grows submerged or floating in ponds, streams, and water gardens. This native plant produces small white or pale blue flowers from summer through early fall and requires consistently wet conditions to thrive. It forms dense underwater mats and is primarily suited for water features rather than traditional landscaping.
In an HOA neighborhood
Water Star-grass 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.
- Requires permanent water feature
- Aquatic plant unsuitable for typical landscaping
- Can spread aggressively in water bodies
Wildlife value
The flowers attract bees and beetles during the blooming season. Dense underwater growth provides habitat and food for aquatic wildlife including fish and waterfowl.
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 Water Star-grass fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.