Hart's tongue fern is an evergreen European native that brings an unexpected elegance to shaded gardens with its distinctive tongue-shaped, leathery bright green fronds. This rhizomatous fern typically grows 9 to 12 inches tall and wide, producing erect-arching clumps of fronds that may have wavy margins, creating a sculptural effect quite different from typical feathery ferns. Hardy in zones 5 through 9, it thrives in partial to full shade with moderate water and requires minimal maintenance once established. The sori (spore-producing structures) arrange themselves in neat rows along the frond undersides, adding another layer of botanical intrigue for close observers.
Partial Shade
Moderate
5-9
12in H x 12in W
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Moderate
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The tongue-shaped fronds of this fern offer architectural interest that most ferny plants simply cannot match. Its leathery texture and bright green color hold up remarkably well through seasons, remaining evergreen in most climates. The fronds can reach 12 to 18 inches in some specimens, creating a fuller presence than its modest 9 to 12 inch mature dimensions might suggest. Growing it well requires attention to one critical detail: superior soil drainage and slightly alkaline to acidic, humus-rich soil with limestone will reward you with a long-lived, trouble-free plant.
Hart's tongue fern functions as a shade-loving foliage plant, contributing year-round textural and visual interest to woodland gardens, shaded borders, and partly shaded corners where sunlight is scarce. Its evergreen nature and compact growth habit make it suitable for foundation plantings and shaded rock gardens where other plants struggle. The distinctive frond form also appeals to fern collectors and gardeners seeking architectural plant specimens.
No timeline data available yet for this variety.
Remove dead or damaged fronds by cutting them as close to the base as possible, which will encourage the plant to direct energy toward new, healthy growth. The Crispum Group cultivars with wavy or frilled margins should have old fronds removed to display newer, more ornamental growth more prominently. Beyond removing dead foliage, this fern requires no formal pruning.
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“Hart's tongue fern is primarily native to Europe, where it has grown for centuries in cool, moist woodland conditions. A rare American variety, Asplenium scolopendrium var. americanum, exists in extremely limited numbers in scattered sites across Alabama, Tennessee, and Michigan, representing a distinct North American population. The species has been cultivated and admired by gardeners for generations, with documented cultivar groups like the Crispum Group developing over time through careful propagation and selection of plants with distinctly frilled or wavy frond margins.”