Interrupted Fern

Osmunda claytoniana

Interrupted Fern

Taxonomy

Division:
Pteridophyta | - Ferns
Family:
Osmundaceae
Genus:
Osmunda
Species:
Osmunda claytoniana

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
6-8 ft
Light Requirements:
Shade
Drought Tolerance:
High
Bloom Months:
jun
Bloom Colors:
Not Applicable

Native Range

United States: Alabama, Arkansas, Connecticut, District of Columbia, Delaware, Georgia, Iowa, Illinois, Indiana, Kentucky, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, North Carolina, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Virginia, Vermont, Wisconsin, West Virginia, Canada: Manitoba, New Brunswick, Nova Scotia, Ontario, Prince Edward Island, Quebec

Keystone Species Ranking

Caterpillar Keystone:
★★★★☆ Based on number of butterfly and moth species using this genus as host plant (Source: National Wildlife Federation)

Host Plant for Caterpillars

osmunda borer moth (Papaipema speciosissima)

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.0 - 6.5 (slightly acidic to neutral)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
prefers shaded, woodland environments

Germination Information

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 60 days.

Source: OpenAI GPT-4o