Hardy Hibiscus, Rose Mallow, Swamp Mallow 'Turn of the Century'

Hibiscus moscheutos

Family: Malvaceae (mal-VAY-see-ee) (Info)
Genus: Hibiscus (hi-BIS-kus) (Info)
Species: moscheutos (mos-KEW-tos) (Info)
Cultivar: Turn of the Century
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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:


Bloom Time:

Mid Summer

Late Summer/Early Fall



Other details:

Unknown - Tell us

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

Where to Grow:

Unknown - Tell us


This plant is said to grow outdoors in the following regions:

Dothan, Alabama

Fayetteville, Arkansas

East Haddam, Connecticut

Fayetteville, Georgia

Albion, Indiana

Columbus, Indiana

Farmersburg, Indiana

Atalissa, Iowa

Taylorsville, Kentucky

Dearborn Heights, Michigan

Lincoln, Nebraska

East Brunswick, New Jersey

Columbus, Ohio

Tioga, Pennsylvania

Collierville, Tennessee

Austin, Texas

Humble, Texas

Temple, Texas

Puyallup, Washington

Vancouver, Washington

Stoughton, Wisconsin

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Gardeners' Notes:


On Jul 13, 2020, JennysGarden_TN from Collierville, TN wrote:

It is blooming now in my zone 7b garden. Love the pinwheel-like bi-colored dark red and light pink blooms!


On Jun 25, 2014, ap2 from Antioch, TN wrote:

i love this plant. i have had this beautiful flower for some yrs. and never knew what it was until recently. now my question is how do i get seeds from it??? i know that it comes back every year. but i would love seeds. to share with my friends. if anyone has any info on that it would be great. i noticed where this plant is usualy grown... well i live in nashville tn. and it has done great here even with our crazy weather.


On Sep 21, 2006, jamie68 from Vancouver, WA (Zone 8b) wrote:

With so many hibiscus out there, this one really stood out and yelled "Take me Home with you!" I am drawn to these flowers constantly, the coloration is unique, eye-catching - and gorgeous!! Visitors to my garden comment on it so often, I have to keep an eye on it to make sure it doesn't "accidently" go home with one of them..LOL :-)


On Aug 22, 2006, sladeofsky from Louisville, KY (Zone 6b) wrote:

The left side of each petal is the softest pink. As one's eye moves across the petal the hue gradually deepens to a vivid rose. The eye of the blossom is bright red. The outer edges of the petals are blushed with the same color. This all adds up to a uniquely stunning effect. This is the plant to choose if you like to hear your guests exclaim, "WOW."