Brazilian Tree Fern (Blechnum brasiliense)

Brazilian Tree Fern

Blechnum brasiliense

Lush arching fronds bring tropical forest calm to shaded spaces. Evergreen fern; common name: Brazilian Tree Fern.

Partial sun
2–3/week
Moderate
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Plant Needs

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Sunlight Bright indirect or filtered shade; avoid direct midday sun which can scorch frond leaflets
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Watering Keep soil consistently moist but not waterlogged; avoid allowing the growing medium to dry out completely
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Temperature Thrives in warm, humid conditions; avoid temperatures below 12°C to prevent leaf browning and damage
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Characteristics

  • Leaf: Arching pinnate fronds with glossy deep green leaflets; young fronds often have a reddish bronze tint
  • Stem: Short, woody rhizome covered in brown, scaly frond bases
  • Spores: Sori (spore clusters) located along the margins of fertile fronds
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Care Guide

Watering

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

Fertilization

Diluted balanced liquid feed every 4 weeks. Avoid over-fertilizing, as excess nutrients can cause leaf tip burn

Banana peel compost tea:Compost banana peels for 2–3 weeks, steep in water for 3 days, dilute 1:20 for root drench; discard solid peels to avoid pest infestations
Pruning
  • Remove brown, dead fronds at the base to improve airflow and maintain a neat appearance
  • Trim damaged frond tips to prevent browning from spreading
  • Divide overcrowded clumps in early spring for propagation
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirms no toxicity to cats

Humans: No known toxicity to humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental foliage for indoor shaded displays, tropical garden borders, or hanging baskets