Hibiscus grandiflorus

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Swamp Rosemallow

Malvaceae

Plant Specifics

Form:Flower
Size:6-10 ft tall by 4 ft wide
Life Span:Short-lived perennial
Flower Color:Pink
Fruit Color:Brown
Phenology:Winter dormant
Noted for:Showy flowers

Landscaping

Recommended Uses:Specimen plant or background screen for wet places.
Propagation:Seeds are available through the Florida Wildflowers Growers Cooperative.
Availability:Native nurseries, Seed
Light: Full Sun
Moisture Tolerance:
always floodedextremely dry
 (Aquatic ----- to ----- Usually moist, occasional inundation)
Moisture Tolerance: Aquatic ----- to ----- Usually moist, occasional inundation
Salt Water Flooding Tolerance:Not salt tolerant of inundation by salty or brackish water.
Salt Spray/ Salty Soil Tolerance:Low/no tolerance of salty wind or direct salt spray
Soil or other substrate:Loam, Organic material (muck), Sand
Soil pH:

Ecology

Wildlife:
 

Attracts butterflies, bees, beetles, and birds.
Insects:
   

  • Larval host of  Gray Hairstreak, Painted Lady Butterfly, Common Checkered Skipper and Tropical Checkered Skipper butterflies and  four moths : Pearly Wood Nymph, Yellow Scallop Moth, Io Moth,  and Delightful Bird-Dropping Moths.
  • Attracts butterflies and  native bees (including the Rose-mallow Bee which is a Hibiscus specialist), beetles, etc. 
Native Habitats:Depressions in pine flatwoods, brackish and freshwater marshes, edges of lakes and ponds, along rivers, swamps, canals, ditches. Commonly in water but may occur in dry floodplains and dry marshes.

Distribution and Planting Zones

Natural Range in Florida
USDA Zones

Suitable to grow in:
10A 10B 11 9A 9B 

USDA zones are based on minimum winter temperatures

Comments

General Comments:This is a wetland plant. It is rarely grown, but it has potential in appropriate sites.