Castor-Leaf Begonia (Begonia x ricinifolia)

Castor-Leaf Begonia

Begonia x ricinifolia

Its large palmate leaves evoke tropical lushness, a bold foliage statement. Herbaceous perennial ornamental; common name: Ricinifolia Begonia.

Partial sun
2–3/week
Moderate
🌱

Plant Needs

☀️
Sunlight Bright indirect light; avoid direct midday sun to prevent leaf scorching and bleaching
💧
Watering Water when the top 2–3 cm of soil is dry; avoid overwatering to prevent root rot in poorly drained substrates
🌡️
Temperature Thrives in warm, humid conditions; protect from temperatures below 12°C to avoid leaf yellowing and tissue damage
🔍

Characteristics

  • Leaf: Large, castor bean-like palmate leaves, deep green with serrated margins and prominent veins
  • Flower: Clusters of small, pale pink or white monoecious flowers on upright stalks
  • Stem: Succulent, reddish-green stems covered in fine, soft hairs
🛠️

Care Guide

Watering

Keep soil consistently moist but not waterlogged; mist leaves to maintain humidity

Fertilization

Diluted balanced liquid fertilizer every 2 weeks. Discontinue fertilization in autumn and winter when growth slows

Banana peel compost tea:Use fully composted banana peels soaked in water for 24 hours; dilute 1:20 for root drench to avoid nutrient burn
Pruning
  • Remove yellow or damaged leaves at the base to improve air circulation
  • Trim leggy stems in early spring to encourage bushier, more compact growth
  • Pinch back growing tips to promote branching and increase foliage density
⚠️

Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion leads to oral pain and gastrointestinal distress

Humans: Contains calcium oxalate crystals; ingestion causes oral irritation and temporary discomfort

📖

Garden Uses & Culture

Culture: N/A

Usage: Ornamental foliage plant for indoor statement containers or shaded garden borders