Molten Lava Oxalis (Oxalis vulcanicola 'Molten Lava')

Molten Lava Oxalis

Oxalis vulcanicola 'Molten Lava'

Fiery copper foliage glows like molten rock, a compact, cheerful groundcover. Ornamental perennial; common name: Molten Lava Oxalis.

Partial sun
1–2/week
Beginner
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Plant Needs

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Sunlight Bright indirect sunlight with gentle morning sun; avoid harsh midday sun that can scorch foliage; tolerates partial shade
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Watering Water when the top 2 cm of soil feels dry; avoid overwatering to prevent bulb and root rot
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Temperature Thrives in cool to temperate temperatures; protect from frost below 10°C to prevent bulb damage
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Characteristics

  • Leaf: Trifoliate heart-shaped leaves with coppery-orange to deep red hues, folding inward at night
  • Flower: Small, pale pink to white five-petaled blooms held above foliage clusters
  • Stem: Slender, green to reddish stems supporting leaf and flower structures
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Care Guide

Watering

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

Fertilization

Diluted balanced liquid feed every 2 weeks. Use half-strength fertilizer to avoid burning tender foliage

Banana peel compost tea:Compost banana peels for 4 weeks, steep in water for 24 hours, dilute 1:20 for root drench; avoid raw peels to prevent pest infestations
Pruning
  • Deadhead spent flowers regularly to encourage prolonged blooming
  • Trim yellowing or damaged foliage to maintain a tidy clumping habit
  • Divide overcrowded bulbs in early spring to propagate new plants and reduce competition
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; oxalate crystals cause oral pain, vomiting, and difficulty swallowing

Humans: Contains calcium oxalate crystals; ingestion causes mild mouth and throat irritation

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Garden Uses & Culture

Culture: Fiery foliage symbolizes warmth and vibrancy; popular in modern minimalist container arrangements

Usage: Ornamental groundcover, indoor tabletop plant, rock garden accent