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Rose of Sharon, Shrub Althea 'Boule de Feu'

Hibiscus syriacus

Family: Malvaceae (mal-VAY-see-ee) (Info)
Genus: Hibiscus (hi-BIS-kus) (Info)
Species: syriacus (seer-ee-AK-us) (Info)
Cultivar: Boule de Feu
» View all varieties of Hibiscus


8-10 ft. (2.4-3 m)


Unknown - Tell us


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)

Sun Exposure:

Sun to Partial Shade

Bloom Color:

Fuchsia (red-purple)

Bloom Time:

Mid Summer

Late Summer/Early Fall


Unknown - Tell us

Other details:

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Soil pH requirements:

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Patent Information:

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Propagation Methods:

Unknown - Tell us

Seed Collecting:

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Foliage Color:

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Bloom Characteristics:

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Water Requirements:

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Where to Grow:

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

Stockton, California

West Babylon, New York

Cleveland, Ohio

Thackerville, Oklahoma

Austin, Texas

Gardeners' Notes:


On Jun 6, 2010, sarahbee from Austin, TX wrote:

Blooms generously in late May and through June in US Zone 8. The blossoms really do look like carnations, and have a pleasant scent. I cut them back in the fall and they comes back strong every spring. I have four of these shrubs growing under the shade of my live oak tree, so I would describe the conditions as partial to full shade. I inherited them and they are next to a walkway which is inappropriate, so I plan on relocating them to another spot in my yard so they can grow to their full height as they mature (they are all still under 30" tall). I hope they survive the transplant!


On Jun 18, 2007, jackieshar from Texas/Okla central border,
United States (Zone 7b) wrote:

beautiful, 3 in bloom looks like multicolored carnation buttonaire.........prolific early summer bloom, plant is hardy and survives in direct sun with little or no care, supplemental water in my dry area, no insect problem or disease in 6 years


On Nov 26, 2005, wallaby1 from Lincoln,
United Kingdom (Zone 8a) wrote:

I struggled to give this positive, but perhaps the plant needs to be understood, and the owner needed to be patient. I cannot deny the flower is beautiful, I was intrigued by its many frilly petals, seeming to have many separate 'eyes'.
Bought approx 6 years ago as a young plant, it at first struggled, but that may have been due to its growing medium. I moved it to another position after a year, a new bed with much shade, but filtering sun. Planted very near an acacia dealbata which has grown large in the 5 years, with many fine roots, I wondered if it may suffer due to lack of moisture. Last year it appeared to be making some good flowers, but most dried and dropped. This may have been due to the very hot , dry year. This year it flowered beautifully, a very cool summer, but ... read more