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PlantFiles: Silver Tree Fern, Ponga
Cyathea dealbata

 
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Family: Cyatheaceae
Genus: Cyathea (sigh-ATH-ee-uh) (Info)
Species: dealbata (day-al-BAH-tuh) (Info)

Synonym:Polypodium dealbatum
Synonym:Cyathea tricolor
Synonym:Alsophila tricolor

5 members have or want this plant for trade.

Category:
Perennials
Ferns

Height:
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)
20-30 ft. (6-9 m)

Spacing:
20-30 ft. (6-9 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)

Sun Exposure:
Partial to Full Shade

Danger:
N/A

Bloom Color:
Inconspicuous/none

Bloom Time:
N/A

Foliage:
Grown for foliage
Silver/Gray
Bronze-Green
Shiny/Glossy-Textured

Other details:
This plant may be considered a protected species; check before digging or gathering seeds

Soil pH requirements:
Unknown - Tell us

Patent Information:
Non-patented

Propagation Methods:
From spores

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 kennedyh
Thumbnail #1 of Cyathea dealbata by kennedyh

By bootandall
Thumbnail #2 of Cyathea dealbata by bootandall

By bootandall
Thumbnail #3 of Cyathea dealbata by bootandall

By bootandall
Thumbnail #4 of Cyathea dealbata by bootandall

By Cretaceous
Thumbnail #5 of Cyathea dealbata by Cretaceous

Profile:

3 positives
2 neutrals
No negatives

Gardeners' Notes:

RatingAuthorComment
Positive mattycindy On Aug 14, 2009, mattycindy from Christchurch
New Zealand wrote:

This tree fern is easily recognized by its distinctive silvery underside of the frond. Young plants are however green underneath.
It is found throughout New Zealand in lowland to montane forests.

It is easily grown and will tolerate drier conditions than the other tree ferns. Does best in a sheltered site with shade or semi shade and good moist, well-composted soil is best. Suitable for growing in a large pot too.

Neutral Cretaceous On Jun 21, 2007, Cretaceous from El Cerrito, CA (Zone 9b) wrote:

Native to New Zealand.

Cyathea are listed on CITES Appendix II.

Positive BayAreaTropics On Sep 24, 2005, BayAreaTropics from Hayward, CA wrote:

PBS had a documentary about these regal ferns planted on an island off the coast of Ireland. They were said to be over a century old.....

Positive koolkatken On May 25, 2005, koolkatken from Auckland
New Zealand wrote:

Beautiful addition to a tropical look. Does not like lots of sun and needs plenty of water. Great for the shady, damp areas of the house where you don't know what to put there.

Neutral kennedyh On Sep 9, 2003, kennedyh from Churchill, Victoria
Australia (Zone 10a) wrote:

This is a New Zealand tree-fern, growing commonly all over New Zealand, mostly on dry forested hillsides. The fronds are silvery on the under surface and give rise to one of the emblems of New Zealand, the silver fern.



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