Red Renanthera (Renanthera coccinea)

Red Renanthera

Renanthera coccinea

Vibrant scarlet blooms blaze like tropical embers. Epiphytic orchid; common names: Red Renanthera, Fire Orchid.

Partial sun
2–3/week
Moderate
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Plant Needs

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Sunlight Bright indirect sunlight; avoid direct midday sun to prevent leaf scorch; tolerate gentle morning sun exposure
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Watering Water thoroughly when the top 2 cm of growing medium feels dry; empty excess water from pot saucers to avoid root rot
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Temperature Thrives in warm, humid tropical conditions; avoid temperatures below 15°C to prevent leaf damage
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Characteristics

  • Leaf: Thick, leathery, linear-lanceolate leaves arranged alternately along slender stems
  • Flower: Dense racemes of bright scarlet, star-shaped blooms with curved, elongated petals
  • Stem: Slender, aerial root-bearing stems for anchorage to host plants or supports
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Care Guide

Watering

Keep growing medium consistently moist but not waterlogged; mist aerial roots 2–3 times weekly

Fertilization

Diluted balanced orchid fertilizer every 2 weeks. Avoid over-fertilization to prevent salt buildup in the growing medium

Banana peel tea:Soak fully composted banana peels in water for 3 days, dilute 1:20 for root drench; discard solid debris to avoid pest attraction
Pruning
  • Trim spent flower spikes at the base to redirect energy to new growth
  • Remove yellowing or damaged leaves at the stem junction to prevent fungal spread
  • Thin overcrowded stems to improve air circulation around foliage
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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: N/A

Usage: Ornamental epiphyte for indoor displays, hanging baskets, and tropical garden landscapes