How to Grow Hart's Tongue Fern
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Hart's Tongue Fern
Asplenium scolopendrium
fernHart's tongue fern is an evergreen fern prized for its distinctive long, strap-like fronds that resemble a deer's tongue. It thrives in cool, moist woodland conditions and is valued as an ornamental groundcover or specimen plant. Unlike many ferns, it tolerates some sun exposure and is relatively low-maintenance once established.
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Example Hart's Tongue Fern timeline · Pittsburgh, PA (Zone 6b)
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Plant Hart's Tongue Fern
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Hart's Tongue Fern
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives best in zones 4-8; can grow in zone 9 with afternoon shade and consistent moisture
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Establishment
4-8 weeksYoung fern with few fronds, crown slowly expanding just above soil surface
Keep soil consistently moist but allow air circulation around crown. Avoid burying the crown. Provide shade to reduce transplant shock. Mist foliage daily if possible.
Vegetative Growth
Spring through early fall (6-8 months)New fronds unfurl continuously throughout growing season, fern expanding outward with increasing density of strap-like foliage
Maintain consistent moisture and humidity. Remove any dead or damaged fronds at base. Provide balanced fertilizer monthly during active growth. Ensure good drainage to prevent rot.
Frond Maturation
Peak visibility in summer; continues year-round for evergreen varietiesFronds fully lengthen (8-16 inches depending on variety) and develop characteristic glossy texture and color
Fronds may display sori (spore cases) on undersides. Continue regular watering and humidity management. Support tall fronds if necessary in windy locations.
Dormancy/Winter
Late fall through early spring (3-5 months)Growth slows significantly; fronds remain evergreen but may appear duller or slightly bronzed in cool climates
Reduce watering slightly but maintain consistent soil moisture. Provide sheltered location in harsh climates. Do not remove winter fronds; they protect crown. Apply mulch in zone 4.
Spring Renewal
2-4 weeksNew fiddle-head fronds emerge as temperatures warm; old fronds may be pruned back
Begin increasing water and humidity as growth resumes. Remove any dead winter foliage carefully. Resume regular fertilization.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray with insecticidal soap or neem oil; isolate affected plants; improve air circulation
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Remove by hand with soft brush; apply horticultural oil; treat with insecticidal soap
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Increase humidity and misting; spray with water to dislodge; use neem oil if severe
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and
Remove by hand; create copper barriers; apply diatomaceous earth around base; reduce moisture near ground level
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Improve drainage; ensure crown is not buried; reduce watering frequency; repot in fresh soil if necessary
Uses
Ornamental Groundcover & Specimen Plant
HouseholdHart's tongue fern is prized as an evergreen groundcover in shaded woodland gardens and under trees. Its distinctive strap-like fronds add unique texture and visual interest to shaded borders, rock gardens, and containers. [source]
Cut Fronds for Floral Arrangements
HouseholdThe elegant, long fronds are valued by florists and gardeners for fresh or dried flower arrangements. They add textural interest and longevity to bouquets and can last several weeks in water. [source]
Pressed Fern Art & Crafts
CraftHart's tongue fronds press beautifully for botanical art, scrapbooking, and craft projects. The uniform shape of the fronds makes them ideal for framing or creating decorative pressed-plant artwork. [source]
Traditional Herbal Use
MedicinalHistorically used in traditional European herbalism, hart's tongue was employed in teas and poultices. Modern herbal practitioners occasionally reference its traditional use, though scientific evidence is limited. [source]
Shelter for Garden Fauna
WildlifeThe dense evergreen fronds provide year-round shelter, nesting material, and habitat for beneficial insects, small lizards, and ground-dwelling creatures in woodland gardens. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Ferns are not harvested for consumption or material use in typical gardening. Fronds can be cut for fresh arrangements; cut at base of petiole (stem) with clean scissors. Fiddleheads (emerging fronds) may be admired but are not typically harvested from ornamental plantings. Allow spores to develop naturally on undersides of mature fronds if propagating.
Fun Facts
- 🌱 Hart's tongue fern was once thought to be sterile because its spore-bearing structures (sori) are difficult to see without magnification, unlike the obvious spore patterns on many other ferns.
- 🌱 The plant earned its common name from the resemblance of its long, strap-like fronds to a deer's (hart's) tongue; it has been cultivated in European gardens for centuries and appears in medieval herbals.
- 🌱 This fern reproduces via spores rather than seeds and can self-propagate in optimal conditions; a single mature plant can produce millions of spores that spread on air currents.
Gardening Terms
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