Rough Maidenhair Fern (Adiantum hispidulum)

Rough Maidenhair Fern

Adiantum hispidulum

Its fronds unfurl like delicate lace, soft and feathery. Evergreen fern; common name: Rough Maidenhair Fern.

Partial sun
2–3/week
Moderate
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Plant Needs

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Sunlight Bright indirect light; avoid direct midday sun which can scorch delicate fronds
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Watering Keep soil consistently moist but not waterlogged; use distilled or rainwater to prevent mineral buildup
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Temperature Thrives at 18–24°C; avoid cold drafts and temperatures below 10°C which cause frond browning
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Characteristics

  • Frond: Triangular, finely divided fan-shaped leaflets; fronds have a rough, hairy texture
  • Stipe: Dark brown to black, covered in fine, stiff hairs
  • Sori: Small spore clusters on leaflet undersides, protected by folded leaf margins
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Care Guide

Watering

Maintain steady soil moisture; mist fronds 2–3 times weekly to boost humidity

Fertilization

Diluted balanced liquid feed once monthly. Use half-strength fertilizer to avoid burning sensitive roots

Banana peel compost tea:Steep fully composted banana peels in water for 24 hours; dilute 1:20 for root drench; discard solids to avoid odor
Pruning
  • Trim brown, dead fronds at the base to encourage new growth
  • Remove yellowing fronds to improve air circulation and reduce fungal risk
  • Divide overcrowded clumps in spring for propagation and healthier growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-verified non-toxic; no harmful effects if ingested

Humans: Non-toxic to humans; no known adverse effects from handling or ingestion

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental foliage for terrariums, shaded indoor displays, and moist garden borders