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Swamp hibiscus, Swamp rosemallow
Hibiscus grandiflorus

Copyright by: Roger L. Hammer

General Landscape Uses: An accent shrub along pond and lake edges.

Ecological Restoration Notes: A rather infrequent element in marshes and the edges of freshwater swamps.

Availability: Grown by one or two native plant nurseries in South Florida.

Description: Medium erect shrub.

Dimensions: Typically 6-8 feet in height. Usually taller than broad.

Growth Rate: Moderate.

Range: Southeastern United States west to Texas and south to Miami-Dade County and the Monroe County mainland.

Map of select IRC data from peninsular Florida.

Habitats: Swamps, wet thickets and marshes.

Soils: Wet, moderately well-drained to poorly-drained organic soils.

Nutritional Requirements: High; requires rich organic soils for optimal growth.

Salt Water Tolerance: Low; does not tolerate flooding by salt or brackish water.

Salt Wind Tolerance: Low; salt wind may burn the leaves.

Drought Tolerance: Low; requires moist to wet soils and is intolerant of long periods of drought.

Light Requirements: Full sun.

Flower Color: Light purple or pink with a dark purple or reddish-purple center.

Flower Characteristics: Showy.

Flowering Season: Spring-summer.

Fruit: Inconspicuous dry capsule.

Wildlife and Ecology: Flowers provide nectar for hummingbirds, orioles and other birds.

Horticultural Notes: Can be grown from seed.

Comments: An attractive shrub when in flower, the stems die back at the end of each summer. The following spring, new stems emerge from the base.

Copyright by: Roger L. Hammer

Copyright by: Wes Jurgens

Copyright by: Shirley Denton

Copyright by: Shirley Denton

Copyright by: Shirley Denton

Copyright by: Keith A. Bradley

Copyright by: Keith A. Bradley

Copyright by: Keith A. Bradley

Other data on Hibiscus grandiflorus available from:

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