Fragile Fern

Cystopterisprotrusa

Genus
Cystopteris (sis-TOP-ter-is)
Species
protrusa (pro-TROO-suh)
Synonym
Sun Exposure
Partial to Full Shade
Foliage
Grown for foliage
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)
Bloom Color
Inconspicuous/none
Bloom Time
N/A
Other Details
Category
Ferns
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:

North Miami Beach, Florida

Featured Videos

Gardener's Notes:

0
positive
1
neutral
0
negative
Sort By:
Sort By:
S
Oklahoma City, OK (Zone 7a) | August 2001 | neutral

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

Featured
Cabbage White
(Pieris rapae)
Secretary Bird
(Sagittarius serpentarius)
Featured
Cabbage White
(Pieris rapae)
Secretary Bird
(Sagittarius serpentarius)