Dragon's Mouth Orchid (Arethusa bulbosa)

Dragon's Mouth Orchid

Arethusa bulbosa

Its pink, dragon-like blooms glow in boggy shade, a rare wetland gem. Perennial bog orchid; common name: Dragon's Mouth Orchid.

Partial sun
3–4/week
Challenging
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Plant Needs

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Sunlight Bright indirect or dappled sunlight; tolerates partial shade in natural bog habitats
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Watering Keep substrate consistently moist to mimic natural bog conditions; avoid complete drying
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Temperature Hardy to USDA zones 3–7; withstands mild winter frost, prefers cool growing temperatures
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Characteristics

  • Leaf: Single linear basal leaf, emerging after flowering, up to 20 cm long
  • Flower: Solitary showy pink bloom with a fringed lip resembling a dragon's mouth, 3–5 cm wide
  • Stem: Slender, unbranched green stem bearing a single terminal flower
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Care Guide

Watering

Maintain constant moisture using rainwater or distilled water to avoid mineral buildup

Fertilization

Diluted low-nitrogen orchid fertilizer every 2 weeks. Use fertilizer diluted to half strength to prevent root burn in sensitive bog soil

Composted black tea leaves:Mix fully composted spent black tea leaves into the top 2 cm of substrate; avoid raw leaves to prevent mold growth
Pruning
  • Remove spent flower stems after blooming to direct energy to bulb growth
  • Trim yellowing foliage in late autumn to maintain plant health
  • Divide overcrowded clumps in early spring when dormant to promote new growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: No known toxicity to cats

Humans: No known toxic effects on humans

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental wetland garden plant; native wildflower conservation species