Opening/Closure Status

All outdoor gardens are currently open. The Conservatory and public restrooms remain closed, due to the closure of the U.S. Capitol campus buildings. Please monitor for updates on operating status. USBG resources can be accessed online, including educational materials, virtual tours, and online programs by visiting

Scarlet rosemallow

Plant Botanical Name: 
Hibiscus coccineus
USBG Plant Location: 
Conservatory Room Location: 
Conservatory Terrace
Full sun to part shade
Plant Soil Type: 
Most garden soil
Plant Moisture Requirements: 
Medium to wet

Sometimes called swamp hibiscus as is native to swamps and marshes in Alabama, Georgia and Florida, it is a vigorous woody perennial with showy red flowers. Blooming from mid summer through fall this is a great addition to a border planting or wet area. The flowers attract butterfies and hummingbirds and deer do not eat it.