Osmunda claytoniana L.
Osmundaceae (Royal Fern Family)
USDA Symbol: OSCL2
The fronds of interrupted fern occur in groups. Once-pinnate fertile fronds, which are slightly longer, have 2-5 pair of pinnae in the center of the frond which are twice-pinnate and utilized solely for spore bearing. Sterile fronds bend outward forming a vase-shaped circle enclosing the interrupted fronds. This fern can reach a height of 6 ft.
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Habit: Herb , Fern
Leaf Retention: Evergreen
Leaf: Dark Green
Size Class: 3-6 ft.
Bloom InformationBloom Color: Brown
Bloom Time: Jun
Bloom Notes: This is a non-flowering plant that reproduces by spores which are brown.
DistributionUSA: AL , AR , CT , DC , DE , GA , IA , IL , IN , KY , MA , MD , ME , MI , MN , MO , MS , NC , NH , NJ , NY , OH , PA , RI , SC , TN , VA , VT , WI , WV
Canada: NB , NL , NS , ON , PE
Native Distribution: Nf. to Man., s. to GA & LA
Native Habitat: Rich, wooded slopes; moist ledges
Growing ConditionsWater Use: High
Light Requirement: Shade
Soil Moisture: Moist
Soil pH: Acidic (pH<6.8)
CaCO3 Tolerance: Low
Soil Description: Moist to dry, acid to neutral soils.
Conditions Comments: Interrupted fern is easy to cultivate.
PropagationDescription: Propagate by spores or rhizome division.
Seed Collection: Not Available
Seed Treatment: Not Available
Commercially Avail: yes
Mr. Smarty Plants says
Possible ground covers under pine trees in Illinois
April 18, 2006
Have pine trees in front of house. No luck with the lawn around them....was told it's because of ground acidity. Any tips on how to get a lawn to grow there? If not, can you suggest some ground cover...
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National Wetland Indicator Status
From the National Suppliers DirectoryAccording to the inventory provided by Associate Suppliers, this plant is available at the following locations:
Amandas Garden - Dansville, NY
ArcheWild Native Nurseries - Quakertown, PA
Prairie Nursery - Westfield, WI
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Mt. Cuba Center - Hockessin, DE
Additional resourcesUSDA: Find Osmunda claytoniana in USDA Plants
FNA: Find Osmunda claytoniana in the Flora of North America (if available)
Google: Search Google for Osmunda claytoniana
MetadataRecord Modified: 2015-07-03
Research By: TWC Staff