Photo by Melody

PlantFiles: Hawaiian Tree Fern, Blonde Tree Fern, Hapu'u pulu, Female Tree Fern
Cibotium glaucum

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Family: Dicksoniaceae
Genus: Cibotium (sih-BOH-tee-um) (Info)
Species: glaucum (GLAW-kum) (Info)

Synonym:Cibotium splendens
Synonym:Dicksonia glauca
Synonym:Cibotium st.-johnii

7 members have or want this plant for trade.

Category:
Ferns

Height:
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)

Spacing:
10-12 ft. (3-3.6 m)
12-15 ft. (3.6-4.7 m)

Hardiness:
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:
Light Shade

Danger:
Unknown - Tell us

Bloom Color:
Inconspicuous/none

Bloom Time:
N/A

Foliage:
Grown for foliage
Evergreen
Blue-Green
Smooth-Textured
Velvet/Fuzzy-Textured

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

Soil pH requirements:
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Unknown - Tell us

Propagation Methods:
From spores

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

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Profile:

2 positives
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive Cretaceous On Mar 30, 2007, Cretaceous from El Sobrante, CA (Zone 9b) wrote:

I ordered this tree fern from a nursery in Hawaii (Suncatchers of Hilo) in January. It was shipped dried and barerooted and was planted immediately when it arrived in January.

After just under 17 weeks in a shady spot, and being watered twice daily and fed with diluted fish emulsion, it is starting to grow and is developing a new crozier (fiddlehead).

Native to Hawaii.

Positive BayAreaTropics On Feb 23, 2007, BayAreaTropics from Hayward, CA wrote:

I remember back in the 70's when they were sold here as rooted trunks.Breathtakingly graceful plants. In August 2005, I received a one gallon plant that quickly had every frond shrivel in the shift from the sellers greenhouse to my backyard where we had a dry heatwave in the 90'sF.
Today, It has regrown a full crown of fronds-including new ones in mid winter of 07-one of the coldest in history.
They look great in groups-if you get the chance....

Neutral BotanyBob On May 30, 2001, BotanyBob from Thousand Oaks, CA wrote:

Most of what will be said about this tree fern will be in comparison to the more common Australian tree fern, Cyathea cooperi.

Cibotiums are slower ferns, though still fast relative to most ferns. Unlike Cyatheas which seem to crank out leaves in rapid succession during the late spring (and then one at a time the rest of the year), Cibotium glaucum puts out 2-4 fronds quickly and then sits around for a while before sending any more 'fiddlenecks' up. The fiddlenecks, or new, unfolding fronds, are particularly attractive on these tree ferns, especially as they get larger. They are covered, as is the stem/trunk, with a thick, incredibly smooth matt of orange-brown 'hair', making these a much more 'petable' fern than the Australian variety.

The name 'glaucum' refers to the blue-green underside of the leaves.

These ferns also seem to be more sensitive to intense heat and drying out. Though they are native to Hawaii, where it is always wet and warm, they grow naturally at a higher altitude (prefering over 2000' elevation), so are not especially happy in hot, humid climates, either. They grow well along the cooler, coastal areas of the west coast.

If you have room for this fern in your garden, and you live in the right climate.. or have a cooler, moist greenhouse, I strongly recommend it.

Regional...

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

Eureka, California
Hayward, California
Lakewood, California
Santa Barbara, California
Marathon, Florida
Hawaiian Ocean View, Hawaii
Austin, Texas



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