Hibiscus grandiflorus, the large-flowered hibiscus or swamp rosemallow, is a species of flowering plant in the mallow family, Malvaceae.

[2] Its flowers serve as a nectar source for hummingbirds, and its fruits provide seeds for other birds.

[4] H. grandiflorus is a woody perennial which can reach 6 feet (1.8 m) on average.

[4] It has pink to white flowers with a reddish purple center and yellow stamens.

Flowers are generally greater than 6 inches (15 cm) in diameter.