Photo by Melody

PlantFiles: Hau Kuahiwi
Hibiscadelphus giffardianus

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Family: Malvaceae (mal-VAY-see-ee) (Info)
Genus: Hibiscadelphus
Species: giffardianus

Category:
Trees
Tropicals and Tender Perennials

Height:
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)
15-20 ft. (4.7-6 m)

Spacing:
10-12 ft. (3-3.6 m)

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

Sun Exposure:
Sun to Partial Shade
Light Shade

Danger:
N/A

Bloom Color:
Magenta (Pink-Purple)
Fuchsia (Red-Purple)

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

Foliage:
Evergreen
Smooth-Textured

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)
6.6 to 7.5 (neutral)

Patent Information:
Non-patented

Propagation Methods:
From woody stem cuttings
From seed; direct sow outdoors in fall
Direct sow as soon as the ground can be worked

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
Seed does not store well; sow as soon as possible

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By Metrosideros
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Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive Metrosideros On Dec 6, 2009, Metrosideros from Keaau, HI wrote:

Hau Kuahiwi, Hibiscadelphus giffardianus, is one of the rarest trees on Earth.
A single tree was discovered by Ranger W.C. Giffard in Kipuka Puaulu (Bird Park) on Mauna Loa in 1911. He propagated the tree and saved the species!
It is protected and preserved today by the National Park Service in Hawai'i Volcanoes National Park, along Mauna Loa Road.

Regional...

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

Hawaiian Acres, Hawaii



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