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Marcus, Joseph A.
Hibiscus grandiflorus Michx.
Swamp rosemallow, Swamp rose-mallow, Pink swamp hibiscus, Large-flowered hibiscus
USDA Symbol: higr4
USDA Native Status: L48 (N)
The five pink petals of swamp rose-mallow flowers each have a red to purple center, are 4-6 in. long, and surround many stamens. Flowers nod slightly from leaf axils and occur singly. Velvety, alternate leaves are heart-shaped, three-lobed, and toothed. Seed pods are also velvety. This shrub-like, herbaceous to somewhat woody plant grows to 6 ft. tall or more.
Swamp Hibiscus is a member of the mallow family (family Malvaceae) which includes herbs, shrubs, and rarely small trees, often velvety with starlike or branched hairs, the flowers borne singly or in branched clusters. There are about 85 genera and 1,500 species, many in tropical America. Rose-of-Sharon and other Hibiscus, and Hollyhocks are grown as ornamentals. Okra is the edible fruit of one species of Hibiscus, and the hairs of seeds of Gossypium provide the fiber cotton.
Bloom InformationBloom Color: Red , Pink
Bloom Time: Mar , Apr , May , Jun , Jul , Aug
, TX Native Distribution: GA
to s. MS Native Habitat:
Marshes; ditches; other wet, open areas
Growing ConditionsLight Requirement: Part Shade
Soil Moisture: Wet
Soil Description: Wet soils.
Conditions Comments: Not Available
PropagationDescription: Easily grown from seed planted in the spring.
Seed Collection: Not Available
Seed Treatment: Not Available
Commercially Avail: yes
National Wetland Indicator Status
|Status:|| OBL |
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
Record Last Modified: 2012-08-02
Research By: TWC Staff