Osmunda claytoniana

Common name: Interupted Fern

Native plant

Interrupted Fern has the oldest known fossil record of any living fern in the world - it's been around for 200 million years! Usually grows in a spreading-vase form 2-3' tall, but with ideal moisture can reach 5' in height. Wide fronds are "interrupted" in the middle by spore-bearing pinnae (leaflets) which usually fall off in mid summer, hence the common name. Easily grown in medium to wet soils in part to full shade. Prefers moist, rich, humusy, acidic soils, but can adapt to lesser conditions.


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Price Level: 
Perennial- Specialty Species Tier 2
Sizing Options: 
Flat of 18 (pints)
1 Gallon


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Plant Details

Plant type


Soil type

Mesic (Not too Wet Not too Dry), Moist Mesic, Wet

Light exposure


Bloom period


Urban environment

Uncompacted Urban Soils


Floodplain, Moist Woods, Sandy Soils, Savannas, Woodlands

Growth form

Colonizing / Spreading, Rhizomatous/stoloniferous

Growth rate


Flower color


Fall color



Mature height
2 Feet
Mature width
2 Feet
Max height
4 Feet
Max width
3 Feet

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