Rex Begonia (Begonia rex)

Rex Begonia

Begonia rex

Its patterned leaves are living watercolor, a riot of silver, purple, and green. Evergreen foliage plant; common name: King Begonia.

Partial sun
1–2/week
Moderate
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Plant Needs

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Sunlight Bright indirect light; avoid direct midday sun which can scorch delicate foliage; tolerates low light but loses vibrant leaf markings
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Watering Water when the top 2 cm of soil feels dry; use room-temperature water and avoid wetting leaves to prevent fungal leaf spot
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Temperature Best grown at 18–24℃; avoid cold drafts and temperatures below 12℃ which can cause leaf drop
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Characteristics

  • Leaf: Heart-shaped, asymmetrical, with iridescent silver or purple markings; fuzzy texture on undersides
  • Flower: Small, pale pink or white clusters; visually insignificant compared to foliage
  • Stem: Short, succulent, hairy stems that grow close to the soil surface
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Care Guide

Watering

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

Fertilization

Diluted balanced liquid fertilizer every 2 weeks. Avoid over-fertilizing, as excess nutrients can cause leaf burn and dull markings

Banana peel tea:Soak chopped banana peels in water for 3 days; dilute the tea 1:20 with water before applying to soil; discard solid peels to avoid pest infestations
Pruning
  • Remove yellow or damaged leaves at the base to improve airflow and redirect energy to healthy growth
  • Trim spent flower stalks immediately after blooming to focus resources on foliage development
  • Pinch back leggy stems to encourage bushier, more compact growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion causes oral irritation, drooling, vomiting, and difficulty swallowing

Humans: Contains soluble calcium oxalate crystals; ingestion causes mild oral irritation; may trigger skin rash in sensitive individuals

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Garden Uses & Culture

Culture: Symbolizes elegance and artistic expression; popular for adding colorful texture to indoor spaces

Usage: Ornamental foliage plant for tabletops, terrariums, and shaded indoor gardens