Swamp Rosemallow
Hibiscus grandiflorus
Last reviewed: June 2026
Light
full sun
Water
high
Size
36"–96" H × 24"–48" W
Bloom
Jun, Jul, Aug, Sep
Native to
AL, FL, GA, LA and 3 more states
Pollinators
bees, butterflies, beetles
Swamp rosemallow produces spectacular large pink or white hibiscus flowers up to 8 inches across from summer through early fall. This tall native perennial thrives in consistently moist conditions and can reach 8 feet in height. It dies back completely in winter but returns reliably each spring.
In an HOA neighborhood
Swamp Rosemallow takes more care to keep looking intentional in a front yard. Maintenance level: moderate. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Grows very tall and can appear overgrown
- Dies back completely leaving bare stems in winter
- Requires consistently wet soil conditions
Wildlife value
The large showy blooms attract bees, butterflies, and beetles throughout the long flowering season. Seeds provide food for birds in fall and winter.
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 Swamp Rosemallow fit your yard? Open it in Pollinator Patch to check it against your sun, soil, and HOA-conscious filters.