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Sphaeropteris Species, Mariana Island Tree Fern, Marshall Island Tree Fern

Sphaeropterisaramaganensis

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Genus

Sphaeropteris (sfay-ROP-teris)

Info

Species

aramaganensis (ar-a-mag-an-EN-sis)

Info

Synonym

Alsophila aramaganensis

Cyathea aramaganensis

Sun Exposure

Sun to Partial Shade

Light Shade

Partial to Full Shade

Foliage

Grown for foliage

Evergreen

Height

8-10 ft. (2.4-3 m)

12-15 ft. (3.6-4.7 m)

15-20 ft. (4.7-6 m)

Spacing

8-10 ft. (2.4-3 m)

10-12 ft. (3-3.6 m)

12-15 ft. (3.6-4.7 m)

Hardiness

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)

Danger

N/A

Bloom Color

Inconspicuous/none

Bloom Time

N/A

Other Details

Gardener's Notes:

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positive

neutrals

negative

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Cretaceous

El Sobrante, CA (Zone 9b) | May 2008 | neutral

Native to the Mariana Islands.

Cyathea are listed on CITES Appendix II.

Cretaceous

El Sobrante, CA (Zone 9b) | May 2008 | neutral

Native to the Mariana Islands.

Cyathea are listed on CITES Appendix II.

palmbob

Acton, CA (Zone 8b) | September 2003 | positive

Recently saw a garden in Southern California that had about 15 of these large, profusely branched tree ferns. It quickly becomes massive...Read More

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