Photo by Melody

PlantFiles: Tropical Hibiscus, Cajun Hibiscus
Hibiscus rosa-sinensis 'Cajun Blue'

Family: Malvaceae (mal-VAY-see-ee) (Info)
Genus: Hibiscus (hi-BIS-kus) (Info)
Species: rosa-sinensis (RO-sa-sy-NEN-sis) (Info)
Cultivar: Cajun Blue
Additional cultivar information: (Cajun Series)
Hybridized by Dupont

» View all varieties of Hibiscus

One vendor has this plant for sale.

4 members have or want this plant for trade.

36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)

4-6 ft. (1.2-1.8 m)

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:
Medium Blue

Bloom Time:
Blooms repeatedly


Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:

Propagation Methods:
From herbaceous stem cuttings
From woody stem cuttings
From softwood cuttings
From semi-hardwood cuttings

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Click thumbnail
to view:

By amarantha00
Thumbnail #1 of Hibiscus rosa-sinensis by amarantha00


1 positive
No neutrals
No negatives

Gardeners' Notes:

Positive RobertWM On Dec 18, 2011, RobertWM from Clawson, MI wrote:

The 'blueness' of blue flowers is often exaggerated and so it is with "Cajun Blue". It's really lavender, sometimes with blue highlights, sometimes with pink. But it's a beautiful lavender, with a lit-from-behind quality that gives some lavender flowers an apparent inner glow. The plant is described a upright which is putting it mildly. Leggy and spindly would be more accurate. (I have two planted together in one pot for a fuller look.) The foliage is also rather coarse and weedy compared to some other Hibiscus. So why a positive rating. Simple. The plant blooms and blooms a lot. Sometimes in the dead of winter, on plants maybe 8" tall, it will open two or three blossoms at once. A very welcome display. The blossoms also last two and sometimes three days.Finally it seems less prone to whiteflies than some other Hibiscus I have. I only have about seven months experience with this variety and I will edit this review if I need to change my opinion, but so far I'm well pleased with this plant.


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

San Bernardino, California
Kenner, Louisiana

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