Spider Orchid (Brassia caudata)

Spider Orchid

Brassia caudata

Its spider-like blooms mimic arachnids to lure pollinators, a masterclass in evolutionary beauty. Epiphytic orchid; common name: Spider Orchid.

Partial sun
2–3/week
Moderate
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Plant Needs

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Sunlight Bright indirect light; avoid direct midday sun to prevent leaf burn and pseudobulb damage
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Watering Water thoroughly when the orchid bark medium is nearly dry; empty excess water from saucers to prevent root rot
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Temperature Thrives in warm, humid conditions; avoid temperatures below 12°C to prevent pseudobulb browning and growth stunting
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Characteristics

  • Leaf: Linear to lanceolate, leathery, dark green, 20–40 cm long, growing from pseudobulbs
  • Flower: Star-shaped, pale green to yellow-green with brown markings; petals and sepals elongated to 15 cm, resembling spider legs
  • Pseudobulbs: Oval, fleshy, store water and nutrients for dry periods
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Care Guide

Watering

Keep medium slightly moist; mist foliage 2–3 times weekly to maintain 50–70% humidity

Fertilization

Diluted balanced orchid feed every 2 weeks. Cease fertilization in autumn and winter when growth slows

Banana peel compost tea:Compost banana peels for 4 weeks to break down nutrients; dilute 1:20 with water for root drenching; avoid applying to foliage to prevent leaf burn
Pruning
  • Trim spent flower spikes at the base to redirect energy to pseudobulb growth
  • Remove yellowing or dead leaves and damaged pseudobulbs to reduce fungal disease risk
  • Thin overcrowded pseudobulbs during spring repotting to improve airflow and nutrient uptake
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-verified non-toxic; no harmful effects from ingestion or contact

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

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental cut flower, indoor epiphytic display, greenhouse collection