Soft Tree Fern (Calochlaena dubia)

Soft Tree Fern

Calochlaena dubia

Lacy fronds unfurl like delicate green canopies, bringing prehistoric charm to shaded gardens. Evergreen tree fern; common name: Common Ground Fern.

Partial sun
2–3/week
Moderate
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Plant Needs

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Sunlight Prefers dappled shade or filtered indirect light; avoid harsh midday sun which can scorch fronds
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Watering Keep soil consistently moist but not waterlogged; maintain high humidity around fronds
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Temperature Thrives in cool-temperate to subtropical temperatures; protect from frost below 5°C
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Characteristics

  • Fronds: Arching bipinnate fronds up to 2 m long, soft light green texture
  • Trunk: Short fibrous rhizome covered in persistent old frond bases
  • Spores: Sori on frond undersides, protected by cup-shaped indusia
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Care Guide

Watering

Keep soil evenly moist; mist fronds 2–3 times weekly to boost humidity

Fertilization

Apply diluted organic feed once monthly. Use low-nitrogen, potassium-rich feed to support frond growth

Composted banana peel tea:Steep fully composted banana peels in water for 24 hours; dilute 1:20 for root drench to enhance frond vitality
Pruning
  • Remove brown, dead fronds at the base to improve airflow and appearance
  • Trim damaged frond tips to maintain a tidy, uniform shape
  • Clear accumulated debris from the trunk to prevent pest infestations
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats

Humans: No known toxicity to humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental shade garden plant; suitable for indoor conservatories with high humidity