Plant library · Ferns & Shade Plants
Dryopteris erythrosora
Autumn Fern brings a steady, finely textured presence to partially shaded planting areas. Its coppery new fronds mature to green, giving a low 2-foot layer useful beneath shrubs, along woodland-style borders, or behind shorter shade edging. As a perennial with a roughly equal 2-foot height and width, it reads as a rounded clump rather than a narrow filler.
Use Autumn Fern to fill the middle or front-middle of a shaded bed, where its arching fronds can soften a path edge without spilling into the walking line. Set it in a sheltered position away from drying wind, especially where a wall, fence, or evergreen structure can protect the foliage. It also suits repeated groupings through a moist woodland border, leaving a clear route for weeding and removing damaged fronds.[1][2]
Plant on 18-inch centers for a connected planting that closes into a continuous fern layer. Each clump can reach about 2 feet wide, so allow the foliage to overlap slightly within a mass but keep the outer row set back from paths, bed edges, and low plants that need open light and air. In a mixed border, reserve a 2-foot-wide pocket for each mature plant.
Choose partial shade and moderate, even moisture rather than a site that repeatedly dries hard between waterings. A soil enriched with organic matter helps maintain the woodland character this fern needs; mulch the root zone while keeping the crown uncovered. In its first season, make irrigation easy to reach so the planting can establish without relying on rain alone.[1][2]
The coppery-pink flush is most noticeable as new fronds emerge, then settles into green foliage through the growing season. Semi-evergreen cover can keep the shaded bed from looking bare in milder winters, while colder conditions may leave more cleanup to do before fresh growth resumes. Leave enough access around the clump to remove tired or damaged fronds as needed.[1][2]
In North Carolina, this species may naturalize beyond the intended planting and has been flagged as potentially invasive. Where that concern applies, avoid placing it beside unmanaged woodland, natural areas, or property edges where spread would be difficult to monitor. Keep the planting within a maintained bed and review its footprint as the clumps slowly expand.[1]
Editorial content updated 2026-07-20.