Hardy Hibiscus, Rose Mallow, Swamp Mallow

Hibiscus moscheutos

Family: Malvaceae (mal-VAY-see-ee) (Info)
Genus: Hibiscus (hi-BIS-kus) (Info)
Species: moscheutos (mos-KEW-tos) (Info)
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36-48 in. (90-120 cm)

4-6 ft. (1.2-1.8 m)


24-36 in. (60-90 cm)


USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:

Full Sun

Bloom Color:




White/Near White

Bloom Time:

Mid Summer

Late Summer/Early Fall



Other details:

This plant may be considered a protected species; check before digging or gathering seeds

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

Patent Information:


Propagation Methods:

By dividing the rootball

From herbaceous stem cuttings

From seed; sow indoors before last frost

From seed; direct sow after last frost

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Requires consistently moist soil; do not let dry out between waterings

Where to Grow:

Unknown - Tell us


This plant has been said to grow in the following regions:

, (3 reports)

Anniston, Alabama

Arley, Alabama

Auburn, Alabama

Gadsden, Alabama

Houston, Alabama

Jones, Alabama

Tempe, Arizona

Clayton, California

Roseville, California

Upland, California

Wildomar, California

Denver, Colorado

Lewes, Delaware

Bradenton, Florida

Gainesville, Florida

Holmes Beach, Florida

Inverness, Florida

Jacksonville, Florida (2 reports)

Keystone Heights, Florida

Lake Mary, Florida

Nokomis, Florida

Orange Park, Florida

Rockledge, Florida

Shalimar, Florida

Brunswick, Georgia

Clarkston, Georgia

Cordele, Georgia

Decatur, Georgia

Marietta, Georgia

Richmond Hill, Georgia

Rutledge, Georgia

Savannah, Georgia

Thomson, Georgia

Villa Rica, Georgia (2 reports)

Carterville, Illinois

Chicago, Illinois

Evergreen Park, Illinois

Hampton, Illinois

Mount Prospect, Illinois

Washington, Illinois

Columbus, Indiana

Jeffersonville, Indiana

Warren, Indiana

Belle Plaine, Kansas

Osage City, Kansas

Wichita, Kansas

Calvert City, Kentucky

Ewing, Kentucky

Louisville, Kentucky

Taylorsville, Kentucky

Baton Rouge, Louisiana

New Orleans, Louisiana

Norco, Louisiana

Zachary, Louisiana

Arnold, Maryland

Boyds, Maryland

West Friendship, Maryland

Chatham, Massachusetts

Halifax, Massachusetts

Roslindale, Massachusetts

Springfield, Massachusetts

Sterling, Massachusetts

Birch Run, Michigan

Dearborn Heights, Michigan

Fennville, Michigan

Mason, Michigan

Pinconning, Michigan

Sanford, Michigan

Temperance, Michigan

Thompsonville, Michigan

White Lake, Michigan

Little Falls, Minnesota

Minneapolis, Minnesota

Florence, Mississippi

Mathiston, Mississippi

Mccomb, Mississippi

Aurora, Missouri

Liberty, Missouri

Marshfield, Missouri

Piedmont, Missouri

Rolla, Missouri

Saint Louis, Missouri

Saint Robert, Missouri

Blair, Nebraska

Exeter, Nebraska

Lincoln, Nebraska (2 reports)

Bridgewater, New Jersey

Edison, New Jersey

Frenchtown, New Jersey

Garwood, New Jersey

Haddonfield, New Jersey

Jamesburg, New Jersey

Nutley, New Jersey

Piscataway, New Jersey

Albuquerque, New Mexico

Buffalo, New York

Hamburg, New York

Huntington Station, New York

Tonawanda, New York

Durham, North Carolina (2 reports)

High Point, North Carolina

Sanford, North Carolina

Statesville, North Carolina

Bucyrus, Ohio

Cincinnati, Ohio

Cortland, Ohio

Hilliard, Ohio

Lynchburg, Ohio

Medina, Ohio

Oak Hill, Ohio

Toledo, Ohio

Bartlesville, Oklahoma

Chickasha, Oklahoma

Jay, Oklahoma

Mustang, Oklahoma

Tulsa, Oklahoma

Irrigon, Oregon

Erie, Pennsylvania

Irwin, Pennsylvania

Johnsonburg, Pennsylvania

Lehigh Valley, Pennsylvania

Palmerton, Pennsylvania

Tionesta, Pennsylvania

San Juan, Puerto Rico

Bluffton, South Carolina

Columbia, South Carolina

Conway, South Carolina

Myrtle Beach, South Carolina

North Augusta, South Carolina

North Charleston, South Carolina

Bon Aqua, Tennessee

Covington, Tennessee

Knoxville, Tennessee

Lenoir City, Tennessee

Middleton, Tennessee (2 reports)

Murfreesboro, Tennessee

Austin, Texas (2 reports)

Brazoria, Texas

Broaddus, Texas

Cleburne, Texas

Dallas, Texas

El Paso, Texas

Gainesville, Texas

Houston, Texas

Kerrville, Texas

Lubbock, Texas

New Caney, Texas

Plano, Texas

San Antonio, Texas (3 reports)

Spicewood, Texas

Delta, Utah

Falls Church, Virginia

Leesburg, Virginia

Manakin Sabot, Virginia

Mechanicsville, Virginia

Concrete, Washington

Quilcene, Washington

Seattle, Washington (2 reports)

Philippi, West Virginia

Brookfield, Wisconsin

Eau Claire, Wisconsin

Edgar, Wisconsin

Oconomowoc, Wisconsin

Sauk City, Wisconsin

show all

Gardeners' Notes:


On Jun 20, 2015, coriaceous from ROSLINDALE, MA wrote:

Easy, beautiful. Does well under ordinary garden conditions in full sun---it enjoys boggy conditions but does not require them. It does not require consistent moisture, and is reasonably tolerant of drought. It self-sows here with abandon in ordinary garden soil with no irrigation.

Very late to emerge from dormancy in spring, generally not till June here in Boston (Z6a). I leave six inches of stalk as a marker when I cut them down in the fall.

Sometimes troubled by Hibiscus sawfly and Japanese beetles.

This is the hardiest of half a dozen herbaceous Hibiscus species native to the southeastern US, and has been extensively hybridized in cultivation.


On Jun 20, 2015, Pippinincarnate from Hamburg, NY wrote:

I've seen this plant growing wild at the waters edge of presque isle bay in Erie Pennsylvania. HUGE pink blooms in august and september. Apparently it is an adventive species in the northern USA and is now expanding into southern Canada.

I purchased some starts this spring and so far they are very happy under the downspout *fingers crossed*


On Jun 28, 2004, Wingnut from Spicewood, TX (Zone 8b) wrote:

I haven't grown this plant myself, but have seen it at the Lady Bird Johnson National Wildflower Research Center growing in a bog area and hanging over the pond at the front entrance of the center. It can DEFINITELY live in boggy, wet areas, hence the name "Swamp Rose".