Fire Fern (Oxalis hedysaroides)

Fire Fern

Oxalis hedysaroides

Foliage blazes like embers in sun, a compact trailing beauty. Evergreen perennial herb; common name: Fire Fern.

Partial sun
2–3/week
Beginner
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Plant Needs

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Sunlight Bright indirect light; tolerate partial shade, avoid intense midday sun to prevent leaf scorch
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Watering Water when the top 1–2 cm of soil is dry; avoid overwatering to prevent root rot
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Temperature Thrives in 18–24°C; protect from temperatures below 10°C to avoid leaf drop
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Characteristics

  • Leaf: Triangular, clover-like leaflets in bright red-orange, folding at night
  • Flower: Small, five-petaled pale yellow blooms held above foliage
  • Stem: Slender, trailing stems that root easily at nodes
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Care Guide

Watering

Keep soil evenly moist but not waterlogged; mist occasionally to boost humidity

Fertilization

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

Eggshell powder topdress:Grind clean, dried eggshells to a fine powder; sprinkle a thin layer on soil surface every 2 months to supplement calcium levels
Pruning
  • Pinch back trailing stems to encourage bushier, compact growth
  • Remove yellowed or damaged leaves to maintain plant health and airflow
  • Trim overgrown stems in early spring to refresh the plant’s shape
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-confirmed toxic; calcium oxalate crystals irritate digestive and oral tissues

Humans: Contains calcium oxalate crystals; ingestion may cause mild oral irritation and stomach upset

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental hanging basket or ground cover plant; terrarium accent