Photo by Melody

PlantFiles: Tsushima Holly Fern, Tsus-sima Holly Fern, Korean Rock Fern
Polystichum tsus-simense

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Family: Dryopteridaceae
Genus: Polystichum (pol-IS-tick-um) (Info)
Species: tsus-simense (tsoos-sim-EN-see) (Info)

Synonym:Aspidium aculeatum var. pallescens
Synonym:Aspidium tsus-simense
Synonym:Polystichum falcilobum
Synonym:Polystichum tsus-simense var. pallescens

3 vendors have this plant for sale.

5 members have or want this plant for trade.

Category:
Perennials
Ferns

Height:
12-18 in. (30-45 cm)

Spacing:
Unknown - Tell us

Hardiness:
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
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)

Sun Exposure:
Partial to Full Shade

Danger:
N/A

Bloom Color:
Inconspicuous/none

Bloom Time:
N/A

Foliage:
Grown for foliage
Evergreen

Other details:
Provides winter interest

Soil pH requirements:
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

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

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to view:

By fangNJ
Thumbnail #1 of Polystichum tsus-simense by fangNJ

By DaveH
Thumbnail #2 of Polystichum tsus-simense by DaveH

By ineedacupoftea
Thumbnail #3 of Polystichum tsus-simense by ineedacupoftea

By ampy
Thumbnail #4 of Polystichum tsus-simense by ampy

By gregr18
Thumbnail #5 of Polystichum tsus-simense by gregr18

By Cretaceous
Thumbnail #6 of Polystichum tsus-simense by Cretaceous

By Terri1948
Thumbnail #7 of Polystichum tsus-simense by Terri1948

There are a total of 12 photos.
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Profile:

2 positives
No neutrals
1 negative

Gardeners' Notes:

RatingAuthorContent
Negative Penannophia On May 8, 2011, Penannophia from Whitehouse Station, NJ (Zone 6b) wrote:

I guess it is too cold in zone 6b because neither of my plants survived.

Positive Cretaceous On Mar 25, 2007, Cretaceous from El Sobrante, CA (Zone 9b) wrote:

Named after the Japanese island of Tsus-Sima, this fern is native to Japan, Korea, China, Vietnam, Thailand, and Indochina.

Probably my favourite widely-cultivated (non-U.S. native) fern, and has thrived here in zone 9b.

Polystichum tsus-simense is evergreen and fairly hardy. It is a steady medium-paced grower, with rich dark-green fronds, and can take several years to reach a moderate size. It is often seen locally in the nursery departments of stores such as Orchard Supply Hardware.

Positive tcfromky On Oct 8, 2004, tcfromky from Mercer, PA (Zone 5a) wrote:

Neat, attractive, compact habit. Long used in the South. Dark green typical fern appearance. This is the fern used in corsages because of its minute scale and detail.

Regional...

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

Wetumpka, Alabama
El Cerrito, California
Merced, California
San Francisco, California
Clifton, Colorado
Pompano Beach, Florida
Atlanta, Georgia
Decatur, Georgia
Jonesboro, Georgia
Saint James, Missouri
Cincinnati, Ohio
Clyde, Ohio
Stillwater, Oklahoma
Portland, Oregon
Sumter, South Carolina
Leesburg, Virginia
Lexington, Virginia
Radford, Virginia
Kalama, Washington
Poulsbo, Washington
Madison, Wisconsin



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