10 Seeds Swamp Rose Mallow Hibiscus grandiflorus

Swamp Rose Mallow is a striking native perennial hibiscus prized for its oversized, soft pink blooms that open in late summer. This wetland species forms tall, sturdy stems with broad lobed foliage, creating a bold architectural presence in moist garden settings.

The large flowers attract pollinators and make a dramatic accent in rain gardens, pond margins, and bog plantings. It thrives in consistently wet soils and full sun, growing into a substantial clump over time. Plant in low-lying areas or alongside water features for season-long late summer color.
Species: Hibiscus grandiflorus
Type: Herbaceous perennial
Plant_Habit: Upright, clump-forming
Sun: Full sun
Soil: Moist to wet, rich
Zones: 8 to 10
Germination: 21 to 30 days
Sowing: Surface sow, lightly press into soil
Spacing: 36 to 48 inches
Notes: Native wetland species, blooms late summer