Osmunda claytoniana

interrupted fern add to wishlist

Plant types and subtypes: On SALE This Week, Ferns

Light Requirements: part-shade, shade

Water Use: medium

Soil Moisture: moist, wet

Soil Description: acid, neutral, rich, average, loam, clay, sand

Height: 2'-5'

Leaf Color: green

Hardiness Zone: 3, 4, 5, 6, 7

Additional Tags: clumping, colonizing, deer resistant, naturalizing, ornamental foliage, pond margin plant, shade garden plant, stream margin plant, wetland plant, woodland plant

Osmunda claytoniana (interrupted fern)
  • Osmunda claytoniana (interrupted fern)
  • Osmunda claytoniana (interrupted fern)
  • Osmunda claytoniana (interrupted fern)
  • Osmunda claytoniana (interrupted fern)

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Description

Osmunda claytoniana

Also known as:

interrupted fern

,

Scientific Synonyms:

Description

With a sturdy vase-like form, and tender-green foliage, Osmunda claytoniana will add structural elegance to the shaded garden. Its distinguishing feature - for which it owes the common name interrupted fern - is the set of fertile leaves that develop midway up the fronds and wither away creating the notable interruption. It usually grows to a height of 2 to 3’, but can reach 4’ or more under exceptional conditions. It is well behaved, non-aggressive and trouble free.

Cultivation

While adapted to soggy environments, it performs admirably under more typical garden conditions with moderate levels of moisture, and under filtered light. Its light green color can be used effectively to brighten up a shade garden. Although the root system is fibrous and rhizomatous , vegetative offsets are uncommon. Zones 3-7

Propagation

Divide established clumps in spring or fall. May also be propagated by spores.

Additional Notes

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 the genus, this fern produces a fiber (osmunda) which is favored by birds as a nesting material. It is also collected, compressed, and used as a growing medium for orchids.

Native Range & Classification

Recorded County Distribution: USDA data

Native Range:
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

Classification

Kingdom Plantae Plants
Subkingdom Tracheobionta Vascular plants
Superdivision
Division Pteridophyta Ferns
Class Filicopsida
Subclass
Order Polypodiales
Family Osmundaceae Royal Fern family
Genus Osmunda osmunda
Species Osmunda claytoniana interrupted fern