Holly Fern (Cyrtomium falcatum)

Holly Fern

Cyrtomium falcatum

Its leathery fronds hold glossy green resilience through cool shade. Evergreen fern; common name: holly fern.

Partial sun
1–2/week
Beginner
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Plant Needs

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Sunlight Bright indirect or filtered shade; tolerates low indoor light, avoid direct sun that can scorch fronds
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Watering Water when the top 2–3 cm of soil feels dry; avoid waterlogging to prevent root rot
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Temperature Thrives in cool to temperate conditions; protect from extreme heat above 28°C and frost below 0°C
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Characteristics

  • Frond: Leathery, glossy green pinnate fronds with spiny-tipped leaflets resembling holly leaves
  • Rhizome: Short, scaly, creeping underground rhizome
  • Sori: Clusters of spore cases on undersides of mature leaflets
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Care Guide

Watering

Keep soil consistently moist but not soggy

Fertilization

Diluted balanced liquid feed every 6 weeks. Avoid over-fertilizing, as this can damage frond growth

Banana peel compost tea:Compost banana peels for 2–3 weeks; steep in water for 24 hours, dilute 1:20 for root drench to support healthy frond development
Pruning
  • Remove brown, dead fronds at the base to improve airflow and appearance
  • Trim damaged or yellowing leaflets to prevent fungal spread
  • Divide overcrowded clumps in early spring for propagation
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-confirmed non-toxic to cats

Humans: No known toxicity to humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental shade foliage for indoor and outdoor gardens; suitable for container growing