Crocodile Fern (Microsorum musifolium 'Crocodyllus')

Crocodile Fern

Microsorum musifolium 'Crocodyllus'

Textured fronds mimic crocodile skin, a quiet prehistoric charm. Evergreen epiphytic fern; common name: Crocodile Fern.

Partial sun
1–2/week
Beginner
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Plant Needs

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Sunlight Bright indirect light; avoid direct midday sun which can scorch fronds; tolerates low indoor light conditions
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Watering Water when the top 2 cm of substrate is dry; avoid overwatering to prevent root rot and rhizome decay
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Temperature Thrives in warm, humid conditions; avoid cold drafts below 12°C which cause frond browning
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Characteristics

  • Leaf: Leathery, elongated fronds with raised, bumpy veins resembling crocodile skin; deep green.
  • Rhizome: Thick, creeping rhizome with small brown scales; anchors to growing surfaces.
  • Spores: Clusters of brown sporangia on undersides of mature fronds.
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Care Guide

Watering

Keep substrate consistently moist but not waterlogged; mist fronds 2–3 times weekly to boost humidity

Fertilization

Diluted balanced liquid feed once every 6 weeks. Avoid over-fertilizing, as excess nutrients can damage frond texture and color

Banana peel compost tea:Use fully composted banana peels steeped in water for 3 days; dilute 1:20 with water for root drenching to avoid pest infestations from raw peels
Pruning
  • Trim brown, damaged fronds at the base to maintain plant appearance and airflow
  • Remove dead rhizome sections to encourage new frond growth
  • Thin overcrowded fronds to prevent fungal growth from trapped moisture
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-verified non-toxic to cats; no harmful compounds present

Humans: Non-toxic to humans; no reported adverse effects from ingestion or contact

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental indoor fern; suitable for terrariums, mounted displays, and hanging baskets