General Plant Information (Edit)
Plant Habit: Shrub
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Wet
Wet Mesic
Plant Height: 10 feet
Leaves: Deciduous
Flowers: Showy
Fragrant
Nocturnal
Flower Color: Pink
Bloom Size: 6"-12"
Suitable Locations: Bog gardening
Uses: Will Naturalize
Wildlife Attractant: Bees
Butterflies
Hummingbirds
Resistances: Salt tolerant
Propagation: Seeds: Start indoors
Propagation: Other methods: Cuttings: Stem
Cuttings: Tip
Cuttings: Cane
Division
Containers: Suitable in 3 gallon or larger

Image
Common names
  • Large-Flowered Hibiscus
  • Swamp Rose-Mallow
  • Hibiscus
  • Pink Swamp Hibiscus
  • Swamp Rosemallow

Large-Flowered Hibiscus (Hibiscus grandiflorus) was a featured
Plant of the Day for December 21, 2015.
Photo Gallery
Location: Jefferson County, Texas
Date: July 23, 2014
Location: Botanical Gardens of the State of Georgia...Athens, Ga
Date: 2017-07-31
Swamp Rosemallow 004
Location: Botanical Gardens of the State of Georgia...Athens, Ga
Date: 2017-07-31
Swamp Rosemallow 004
Location: Jefferson County, Texas
Date: July 23, 2014

photo credit: Bob Peterson
Comments:
  • Posted by SongofJoy (Clarksville, TN - Zone 6b) on Mar 9, 2012 3:30 PM concerning plant:
    Giant swamp rosemallow is a large, herbaceous perennial, sometimes reaching 10 ft. or more in height and often developing a semi-woody stem near the base.

    The palmately three-lobed leaves are grayish-green and velvety, fuzzy on the top and bottom, and are large.

    'Hibiscus grandiflorus' has very large flowers with five six-inch petals that are pale pinkish-violet with crimson bases. The flowers open in the late afternoon and are finished by noon the following day. A succession of blooms (up to a dozen or more per plant each day) occurs from mid-summer through autumn. A well situated Swamp rosemallow plant grows larger each year by adding additional stalks from its root crown.

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