Tasmanian Tree Fern (Dicksonia antarctica)

Tasmanian Tree Fern

Dicksonia antarctica

Its fronds unfurl like green lace, a living canopy for shaded gardens. Evergreen tree fern; common name: soft tree fern.

Partial sun
2–3/week
Moderate
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Plant Needs

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Sunlight Prefers dappled shade or filtered partial sun; avoid harsh midday direct sunlight which can scorch frond tips
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Watering Keep soil consistently moist but not waterlogged; maintain high ambient humidity around fronds
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Temperature Thrives in cool to temperate conditions; tolerates light frosts but avoid prolonged temperatures below 5°C
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Characteristics

  • Fronds: Large, arching, bipinnate fronds up to 4 m long; soft, bright green foliage
  • Trunk: Fibrous, brown, covered in persistent dead frond bases and fine anchoring roots
  • Spores: Produced on undersides of frond pinnae in small, round sori
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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 every 4 weeks. Use low-nitrogen, potassium-rich organic feed to support frond growth

Composted banana peel tea:Soak fully composted banana peels in water for 24 hours, dilute 1:20, and apply as a root drench to support frond health
Pruning
  • Remove brown, dead fronds at the base to maintain airflow and appearance
  • Trim damaged frond tips with clean, sharp shears to prevent disease spread
  • Avoid cutting into the fibrous trunk, as this can damage the plant's vascular system
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats

Humans: No known toxic effects on humans

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Garden Uses & Culture

Culture: Symbolizes calm and natural shade in temperate garden design; popular in native Australian landscaping

Usage: Ornamental garden specimen; large indoor foliage plant for conservatories or high-humidity rooms