Swamp Rosemallow
(Hibiscus grandiflorus)

swamp rosemallow (Hibiscus grandiflorus)
swamp rosemallow (Hibiscus grandiflorus)

Common Names and Latin Name

Common names include large-flowered hibiscus, pink swamp hibiscus, swamp rosemallow, swamp rose-mallow and velvet hardy mallow.

Hibiscus grandiflorus


Swamp rosemallow is in the Malvaceae, or mallow, family.


This is a shrub-like wildflower that gets large woody stems.  It is deciduous and grows to a height of about 6 feet and about 4 feet wide.

swamp hibiscus (Hibiscus grandiflora)
Swamp Hibiscus (Hibiscus grandiflorus) in a natural setting along a lake front


The leaves are alternate, stalked and grayish green in color.  Their shape is ovate to deltoid and sometimes heart shaped.  The surface is velvety.  Some leaves may have three lobes while others will not. The margins are serrate.

Swamp Hibiscus (Hibiscus grandiflorus)
Swamp Hibiscus (Hibiscus grandiflorus)


Swamp rosemallow flowers are huge pink beauties  and appear in the spring, summer and early fall.

Swamp Hibiscus (Hibiscus grandiflorus)
Swamp Hibiscus (Hibiscus grandiflorus)


It is found naturally occurring in lake sides, marshes, wetlands, swamps and wet areas.

Native Range

It is native to  Alabama, Florida, Georgia, Louisiana, Mississippi, and Texas.  It grows in zones 8a to 11.

Landscape Uses

In the home landscape it will need constant water so a site that has poor drainage is a good location, or container grown. 

It needs a lot of room to grow because of its large size.

Wildlife Uses

The flower nectar attracts butterflies, bees, and beetles.

It is a larval host plant for several species of butterflies and moths including the Gray Hairstreak, Painted Lady, Common Checkered Skipper, Tropical Checkered Skipper, Pearly Wood Nymph, Yellow Scallop Moth, Io Moth, and Delightful Bird-Dropping Moth.


It can be grown from seed and transplanted.  When transplanting be sure to remove any flowers and most of the upper foliage so it can focus on recovering and repairing its roots.

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