Plant types and subtypes: Ferns
Light Requirements: part-shade, shade
Water Use: medium, high
Soil Moisture: moist, wet
Soil Description: acid, neutral, rich, average, loam, clay, sand
Leaf Color: green
Hardiness Zone: 3, 4, 5, 6, 7
Additional Tags: clumping, colonizing, naturalizing, ornamental foliage, pond margin plant, shade garden plant, stream margin plant, wetland plant, woodland plant
Pricing & Availability
Osmunda claytonianaAlso known as:
Reaching a height of 4 feet or more, Osmunda claytoniana maintains a vase-like appearance. The center leaflets of the fronds are fertile and fall off once the spores have matured. It is the gap in the fronds, created by the missing fertile leaflets, that gave rise to the common name interrupted fern.
Though the interrupted fern does best in a wet and rich environment, it is tolerant of a wide variety of soils and dryer conditions. Its light green color can be used effectively to brighten up a shade garden. It is easy to grow and will not become invasive. Zones 3-7
Divide established clumps in spring or fall. May also be propagated by spores.
Osmunda claytoniana , or interrupted fern, has the oldest known fossil record of any living fern in the world. It has been around for about 200 million years. Like other members of this genus, this fern produces a fiber (osmunda) which is favored by birds as a nesting material, and has also been collected as a potting medium for orchids.
Native Range & Classification
Recorded County Distribution: USDA data
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
USDA Endangered Status:
- Exploitably Vulnerable: NY
- Threatened: AR
|Family||Osmundaceae||Royal Fern family|
|Species||Osmunda claytoniana||interrupted fern|