Hibiscus militaris), the halberd-leaf rosemallow, is a herbaceous perennial flower native to central and eastern North America.

The unbranched stems of this plant are round and hairless, frequently growing to 2 metres (6 ft) tall and sometimes taller.

The hairless leaves are alternate, 8 to 15 centimetres (3 to 6 in) long, divided into 3–5 pointed lobes (cleft) and have serrate or crenate edges.

The blooming period can occur from mid-summer to early fall (June to September) and lasts about a month.

They are frequently found along streams, ponds and lakes and in marshy areas, roadside ditches, and sometimes in shallow standing water.