Photo by Melody

PlantFiles: Robust Male Fern
Dryopteris filix-mas 'Undulata Robusta'

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Family: Dryopteridaceae
Genus: Dryopteris (dry-OP-ter-iss) (Info)
Species: filix-mas (FY-liks mas) (Info)
Cultivar: Undulata Robusta

Category:
Perennials
Ferns

Height:
24-36 in. (60-90 cm)

Spacing:
36-48 in. (90-120 cm)

Hardiness:
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)

Sun Exposure:
Partial to Full Shade

Danger:
Unknown - Tell us

Bloom Color:
Inconspicuous/none

Bloom Time:
N/A

Foliage:
Evergreen

Other details:
Requires consistently moist soil; do not let dry out between waterings
Suitable for growing in containers

Soil pH requirements:
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing the rootball
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 gregr18
Thumbnail #1 of Dryopteris filix-mas by gregr18

By gregr18
Thumbnail #2 of Dryopteris filix-mas by gregr18

By Cretaceous
Thumbnail #3 of Dryopteris filix-mas by Cretaceous

Profile:

1 positive
1 neutral
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive Cretaceous On Aug 17, 2007, Cretaceous from El Sobrante, CA (Zone 9b) wrote:

This fern grows well here in zone 9b.

Neutral smiln32 On Dec 1, 2004, smiln32 from Oklahoma City, OK (Zone 7a) wrote:

Plant in a shady... sheltered location in moist rich soil. Add compost to soil yearly. Susceptible to rust and leaf spot fungus. This plant has an upright habit and reaches a height of 36". It can spread as wide as 48".

Regional...

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

El Cerrito, California
Atlanta, Georgia
Cincinnati, Ohio
Springfield, Virginia



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