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Ebony Spleenwort

Asplenium platyneuron

Also listed as Acrostichum platyneuron, Athyrium platyneuron

herbaceousβ›… part shadeπŸ’§πŸ’§ moderate water❄ Hardy: Zone 3a – Zone 9b

Climate Match for your location

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A delicate evergreen fern with narrow, dark fronds that add fine texture to shaded garden spots. Ebony spleenwort is hardy and low-maintenance, thriving in rocky or sandy soils where many plants struggle.

Why grow it

Ebony spleenwort offers fine textural contrast in shaded woodland gardens where it tolerates drier conditions and poor soils better than most ferns. Unlike many shade ferns that prefer consistently moist substrates, this species establishes readily in rocky, sandy, or well-draining sites, making it useful for difficult microclimates. Its evergreen fronds provide year-round interest, and its modest mature size (typically 6-12 inches tall) suits tight spaces without aggressive spreading.

Watch out for

This fern spreads slowly by spores in favorable conditions, so monitor expansion if planted in confined spaces. Young plants benefit from consistent moisture during their first growing season, even though established specimens tolerate drier conditions. The fronds are brittle and break easily during handling or heavy foot traffic, so site placement should consider walkway proximity.

Overview

Form
Upright
Growth Rate
slow
Size
0.5–1.5β€² tall Γ— 0.5–1β€² wide
Dormancy
evergreen
Family
Aspleniaceae
Medicinal

Native to the United States

Native Range

Eastern North America

Native to: Alabama, Arkansas, Arizona, Colorado, Connecticut, District of Columbia, Delaware, Florida, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, North Carolina, Nebraska, New Hampshire, New Jersey, New Mexico, New York, Ohio, Oklahoma, Pennsylvania, Rhode Island, South Carolina, Tennessee, Texas, Virginia, Vermont, Wisconsin, West Virginia

Seasonality

Season of Interest

SpringFall

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Companion Planting

Plants well with