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PlantFiles: Fragile Fern
Cystopteris protrusa

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Family: Dryopteridaceae
Genus: Cystopteris (sis-TOP-ter-is) (Info)
Species: protrusa (pro-TROO-suh) (Info)

One vendor has this plant for sale.

Category:
Ferns

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

Spacing:
9-12 in. (22-30 cm)

Hardiness:
USDA Zone 2a: to -45.5 C (-50 F)
USDA Zone 2b: to -42.7 C (-45 F)
USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
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)

Sun Exposure:
Partial to Full Shade

Danger:
Unknown - Tell us

Bloom Color:
Inconspicuous/none

Bloom Time:
N/A

Foliage:
Grown for foliage

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

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
Unknown - Tell us

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

Profile:

No positives
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral smiln32 On Aug 31, 2001, smiln32 from Oklahoma City, OK (Zone 7a) wrote:

Easily grown in loose, organically rich, medium wet, well-drained soils in part shade to full shade. Add lime to acidic soils.

Fragile fern is a small, somewhat airy, deciduous, Missouri native fern which occurs in rich woods, slopes, valleys and along streams throughout the State. Typically grows 6-15" tall. Features finely cut, bi-pinnate to tri-pinnate, erect to arching fronds. Fronds have brittle stipes (central stems) which easily break, hence the common name.



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