Eastern Wood Fern, also known as Marginal Shield Fern or Marginal Wood Fern, is tough, resilient and evergreen. The species name "marginalis" does not refer to its hardiness, but instead to its sori (grouped spore cases) that are clustered on the margins of the pinnae, on the underside of the fronds. These ferns are a deep, leathery grey-green color with a pleasingly symmetrical vase-like shape. The fronds are continuously being replenished throughout the growing season, unlike many other ferns which only have one flush of growth per season. Fronds in less than perfect condition can be trimmed back to maintain a neat appearance. Eastern Wood Ferns are a strongly clumping fern that do not colonize. They lend year-round interest to the landscape and look stunning planted in groups of odd numbers throughout shady rock gardens, woodland gardens or even in tough areas of dry shade. Sources:
Growing and Propagating Wild Flowers by Harry R. Phillips
Native Ferns, Moss, & Grasses by William Cullina
Missouri Botanical Garden
The Morton Arboretum-Black Walnut Toxicity
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Dryopteris marginalis (Eastern Wood Fern) - 3QT
Eastern Wood Fern
Plant Care & Installation Quick-Guide
Proper acclimation and installation are key to your plant's success. Please cross-reference these tips with your plant's specific ID tags:
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Pre-Planting: Store plants in a light-appropriate area on soil or grass (avoid hot concrete or asphalt) and water daily until the soil is saturated and the pot feels heavy. If temperatures drop below 30°F, move pots to a garage or cover them to prevent root freeze.
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Installation: Dig a hole matching the depth of the pot, remove the fabric container, and ensure the plant’s crown or root flare is level with the ground. Fill gaps with soil, water heavily, and apply 2 inches of mulch—keeping it clear of the stem.
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Ongoing Care: Check moisture daily by feeling 1–2 inches into the soil; water deeply at the base if the soil feels dry or warm. Newly installed plants require frequent watering (up to 3–4 times weekly in heat) until fully established, which can take a few months for perennials and up to two years for trees.