Photo by Melody

PlantFiles: Hibiscus
Hibiscus hamabo

Family: Malvaceae (mal-VAY-see-ee) (Info)
Genus: Hibiscus (hi-BIS-kus) (Info)
Species: hamabo

» View all varieties of Hibiscus

3 members have or want this plant for trade.

36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)
15-20 ft. (4.7-6 m)

36-48 in. (90-120 cm)
15-20 ft. (4.7-6 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)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Full Sun

Bloom Color:
Pale Yellow

Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall


Other details:
Average Water Needs; Water regularly; do not overwater
Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:

Propagation Methods:
From woody stem cuttings
From softwood cuttings
From seed; direct sow outdoors in fall
From seed; sow indoors before last frost

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds

Click thumbnail
to view:

By vossner
Thumbnail #1 of Hibiscus hamabo by vossner

By vossner
Thumbnail #2 of Hibiscus hamabo by vossner

By stevesivek
Thumbnail #3 of Hibiscus hamabo by stevesivek


3 positives
No neutrals
No negatives

Gardeners' Notes:

Positive AANGELO On Jun 29, 2014, AANGELO from Milano
Italy wrote:

I sown hamabo in spring 2010, and now the plants are circa1, 70 cm.
I wanted to know after how many years blooms and what time.


Positive stevesivek On Apr 1, 2010, stevesivek from Baytown, TX (Zone 9a) wrote:

H. hamabo is much more cold hardy than most people realize. Mine is planted at the northern extreme of zone 9a in west Chambers county, TX. With the unusually cold winter of 2009-2010 we had temperatures to rival a zone 8a normal year. Not a single tip on any of the branches of my two trees were damaged. Now that spring has arrived they are beginning to fully leaf out. This hibiscus can successfully and easily be grown into a beautiful tree. Until hurricane Ike took it out I had one tree that was 20' tall with a trunk 10 inches in diameter. The limbs will become long and pendulous but with proper pruning can be trained to grow more upright. Grown in full sun it is a relatively fast grower. The blooms of hamabo tend to face slightly downward. When grown as a tree it makes a spectacular sight when viewing a few hundred blooms from below the branches. Hamabo will bloom throughout the summer but it's first flush of blooms are the most breathtaking. The tree is a solid mass of yellow. If grown on the street side of your home I can guarantee that people will be stopping to ask what you have growing in your yard. It's happened to me!

Positive vossner On May 30, 2009, vossner from Richmond, TX (Zone 9a) wrote:

Planted inground, part shade. Has survived one zone 9a winter w/o virtually no damage. Medium grower, but that may be because planted in semi-shady location.


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

Coushatta, Louisiana
Lafayette, Louisiana
Baytown, Texas
Richmond, Texas

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