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Osmunda claytoniana /Interrupted Fern

Osmunda claytoniana   / Osmunda claytoniana
A native fern in east and northeastern United States and Canada as well as eastern Asia
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A native fern in east and northeastern United States and Canada as well as eastern Asia

Growing in a garden

Used in a landscape development

Has large fronds up to 6 feet long

Here is seen the interruption of the green leaflets on the stem by the brown fertile ones

Its name is derived from the brown fertile leaflets, which "interrupt" the green sterile leaflets on the larger fronds.

A closer look at the dark brown fertile leaflets

Many young fertile leaflets along frond stems

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Scientific Name: Osmunda claytoniana
Common Name: Interrupted Fern
Leaf Type: Broadleaf
Hardiness Zone: 3, 4, 5, 6, 7 Determine Your Zone
Height: 2- 5 feet
Spread: 5 - 10 feet
Light Exposure: Sun, Part Sun
Drainage: Well drained, Moist
Rate of Growth: Fast
Water Requirement: Medium
Maintenance Level: Low
Landscape Categories:
Comments: Interrupted fern has fertile leaflets which interrupt the sterile ones in the center of each frond. Note the fertile leaflets that "interrupt" the sequence of infertile (sterile) leaflets along the frond stem. There are usually two to four pairs of fertile leaflets (pinnae) with dark brown sporangia when they’re ripe. They wither