Polypodium Species, Caterpillar Fern, Grub Fern

Polypodiumformosana

Genus
Polypodium (pol-ee-PODE-ee-um)
Species
formosana (for-MOH-sa-nuh)
Synonym
Goniophlebium formosanum
Polypodium formosanum
Sun Exposure
Partial to Full Shade
Foliage
Grown for foliage
Evergreen
Height
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
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
Category
Ferns
Epiphytes
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
Patent Information
Propagation Methods
Seed Collecting
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Regional

This plant is said to grow outdoors in the following regions:

Decatur, Alabama

Loma Mar, California

Monterey Park, California

San Francisco, California

Jacksonville, Florida

Plano, Texas

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Gardener's Notes:

5
positives
2
neutrals
0
negative
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P
P
Pittsburgh, PA | January 2011 | positive

Fronds are non-toxic, my parrot enjoys eating them.

I've found it easy to grow. Likes to be pot-bound. Has thrived in bo...Read More

K
Christiana, TN (Zone 6b) | June 2010 | positive

I have the E.T. fern, 'cristatum'. Should this be listed as a separate plant in the Plantfiles?
It's doing great for me so far.

M
M
Plano, TX | May 2009 | positive

I found the rhizomes of this fern the most interesting, especially since the plant was lableled "E.T fern"!! It was a P.formosanum 'crist...Read More

C
C
CpB
Loma Mar, CA | January 2009 | positive

Old fronds will shrivel and brown in late summer. I cut them off in order to make room for fresh growth which will begin immediately. ...Read More

B
Hayward, CA | December 2008 | neutral

NOT an easy to grow fern. It has a dormant period that occurs seemingly sporadic. I know some have had great success at keeping it growin...Read More

C
El Sobrante, CA (Zone 9b) | June 2007 | neutral

Native to Japan, Taiwan, and China.

P
Acton, CA (Zone 8b) | February 2004 | positive

Good hanging basket fern from the orient. Leaves drop up to 2' and the rhizomes have an ornamental sea green to nearlyl white coloration.

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