Hart's Tongue Fern (Asplenium scolopendrium)

Hart's Tongue Fern

Asplenium scolopendrium

Its tongue-shaped fronds unfurl like quiet green scrolls. Evergreen fern; common name: Hart's Tongue Fern.

Partial sun
2/week
Beginner
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Plant Needs

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Sunlight Thrives in bright indirect light or dappled shade; avoid direct midday sun which can scorch fronds
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Watering Keep soil consistently moist but not waterlogged; allow the top 1 cm of soil to dry slightly between waterings
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Temperature Prefers cool to temperate temperatures; protect from frost below 5°C to prevent frond damage
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Characteristics

  • Frond: Long, strap-shaped, glossy green fronds with smooth, unbroken margins, lacking divided pinnae
  • Sori: Rows of brown, linear spore clusters arranged parallel to the midrib on undersides of mature fronds
  • Rhizome: Short, creeping, scaly rhizome that anchors the clumping plant
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Care Guide

Watering

Maintain even soil moisture; mist fronds regularly to boost ambient humidity

Fertilization

Diluted organic feed once every 6 weeks. Avoid over-fertilizing, as this can burn frond tips and disrupt growth

Composted banana peel tea:Soak fully composted banana peels in water for 3 days, dilute 1:20 with water for root drenching; discard solid peels to prevent pest infestations and odor
Pruning
  • Remove brown, dead fronds at the base to improve airflow and maintain a tidy appearance
  • Trim damaged frond tips with clean, sharp scissors to prevent browning from spreading
  • Divide overcrowded clumps in early spring to propagate new plants and reduce competition for nutrients
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: Non-toxic to cats per ASPCA guidelines

Humans: No known toxic effects on humans per ASPCA guidelines

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Garden Uses & Culture

Culture: Symbolizes resilience and quiet beauty in shaded, overlooked spaces

Usage: Ornamental foliage for shade gardens, indoor terrariums, and woodland landscaping