Interrupted Fern

(Osmunda claytoniana)

Interrupted Fern (Osmunda claytoniana)

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Estimated Native Range
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Summary

Claytosmunda claytoniana subsp. claytoniana, commonly known as Interrupted Fern, is a deciduous perennial fern native to moist, rich woodlands and swampy areas in the Eastern United States and Canada. It is also found in similar habitats in East Asia, but not natively in South Asia or Europe, despite fossil evidence of its past presence in Europe. This fern typically grows to a height of 4 feet and a width of 2-3 feet, featuring tall, arching fronds with a distinctive gap (or interruption) where the spore-bearing pinnae are located, giving rise to its common name.

Interrupted Fern is valued for its unique frond structure and lush green appearance, making it a favorite in shade gardens, native plant landscapes, and wildlife gardens. It is also useful for woodland and natural landscaping projects, as well as habitat restoration efforts. Its ability to spread and colonize makes it effective for slope stabilization and erosion control. This fern thrives in part shade to full shade and requires consistently moist soil with good organic content. It is relatively low maintenance but needs protection from strong winds and excessive dryness. While it is not prone to serious diseases or pests, it can suffer in overly dry or sunny conditions.CC BY-SA 4.0

Plant Description

  • Plant Type: Fern
  • Height: 2-3 feet
  • Width: 2-3 feet
  • Growth Rate: Moderate
  • Flower Color: N/A
  • Flowering Season: Non-Flowering
  • Leaf Retention: Deciduous

Growth Requirements

  • Sun: Part Shade, Full Shade
  • Water: High
  • Drainage: Medium, Slow

Common Uses

Bird Garden, Deer Resistant, Edible*Disclaimer: Easyscape's listed plant edibility is for informational use. Always verify the safety and proper identification of any plant before consumption., Low Maintenance, Rabbit Resistant, Water Garden

Natural Habitat

Moist, rich woodlands and swampy areas in the Eastern United States, Canada, and similar habitats in East Asia

Other Names

Common Names:

Scientific Names: Osmunda claytoniana , Claytosmunda claytoniana subsp. claytoniana , Osmunda interrupta , Osmundastrum claytonianum , Osmunda claytoniana f. tomentosa , Osmunda claytoniana var. dubia , Osmunda monticola , Osmunda monticola var. vestita , Osmunda basilaris , Osmunda claytoniana f. claytoniana

GBIF Accepted Name: Claytosmunda claytoniana subsp. claytoniana