Largeleaf Grass Of Parnassus
Parnassia grandifolia
Last reviewed: June 2026
Light
part shade
Water
high
Size
8"–16" H × 6"–12" W
Bloom
Jul, Aug, Sep
Native to
AL, AR, FL, GA and 11 more states
Pollinators
bees, beetles
Largeleaf grass of parnassus is a delicate native perennial that produces white, five-petaled flowers with intricate veining from summer through early fall. This moisture-loving plant forms small clumps with heart-shaped basal leaves and requires consistently wet to moist soil conditions to thrive.
In an HOA neighborhood
Largeleaf Grass Of Parnassus 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 very wet conditions that are impractical for most residential landscapes
- Small stature and delicate appearance may look sparse or weedy
- Specialized bog plant that doesn't fit typical landscaping expectations
Wildlife value
The white flowers attract native bees and beetles during the summer blooming period. This plant provides nectar for pollinators in wetland and moist woodland environments.
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 Largeleaf Grass Of Parnassus fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.