Rex Begonia
Begonia rex
Family: Begoniaceae
Grown for their spectacular leaves rather than flowers — swirls of silver, pink, purple, red, and green in endless varieties. Each leaf is a work of art. Needs humidity to thrive.
Complete Care Guide
Light Requirements
Thrives near east-facing windows or a few feet back from south/west windows. Needs consistent but not intense light.
Watering
Water when the top 1-2 inches of soil feel dry. Consistent moisture is preferred but brief dry periods are tolerated.
Typical schedule: every 5 days (adjust for season and environment).
Humidity
This plant loves moisture in the air. Keep humidity above 50-60% using a humidifier, pebble tray, or by grouping plants together. Bathrooms with natural light are often ideal.
Temperature
Keep between 60–75°F (16–24°C). Avoid cold drafts, heating vents, and sudden temperature changes.
Size & Growth
Mature size: approximately 12 inches tall × 18 inches wide. Growth rate is moderate. Habit: bushy. Stays compact enough for desks and shelves.
Difficulty Level: 3/5
Moderate care requirements. Needs reasonably consistent watering, appropriate light, and attention to humidity. Best for someone with a few plants already.
Quick Tips
- ✓High humidity essential — terrariums ideal
- ✓Water when top inch is dry — avoid wetting leaves
- ✓Medium indirect light
- ✓Avoid cold drafts and temperature swings
Common Problems & Solutions
Brown leaf tips
Cause: Low humidity, inconsistent watering, or mineral buildup from tap water
Fix: Increase humidity with a pebble tray or humidifier. Use filtered water. Water on a consistent schedule.
Scorched or bleached leaves
Cause: Too much direct sunlight burning the foliage
Fix: Move away from direct sun. This plant prefers filtered or indirect light.
Drooping or wilting
Cause: Usually underwatering or sudden temperature change
Fix: Water thoroughly and ensure consistent moisture. Avoid cold drafts and heating vents.
Crispy leaf edges
Cause: Humidity too low for this tropical plant
Fix: Group plants together, use a humidifier, or place on a pebble tray. Bathrooms often provide ideal humidity.
Toxic to Pets
Rex Begonia is toxic to cats and dogs. Ingestion may cause oral irritation, excessive drooling, vomiting, and difficulty swallowing. Keep this plant out of reach or consider a pet-safe alternative.
Browse pet-safe alternatives →Best For
Frequently Asked Questions
Is Rex Begonia safe for cats and dogs?▼
No — Rex Begonia is toxic to both cats and dogs. If ingested, it may cause oral irritation, drooling, vomiting, or difficulty swallowing. Keep out of reach of pets or choose a pet-safe alternative.
How often should I water Rex Begonia?▼
Water approximately every 5 days, but always check the soil first. Water when the top 1-2 inches of soil feel dry. Consistent moisture is preferred but brief dry periods are tolerated. Adjust frequency based on season — less in winter, more in summer.
How much light does Rex Begonia need?▼
Rex Begonia prefers medium light conditions. Thrives near east-facing windows or a few feet back from south/west windows. Needs consistent but not intense light.
How big does Rex Begonia get?▼
Indoors, Rex Begonia typically reaches about 12 inches (30 cm) tall with a spread of around 18 inches. Growth rate is moderate. Size depends on pot size, light, and care.
Is Rex Begonia good for beginners?▼
Rex Begonia has a difficulty rating of 3/5, so it's best for intermediate plant parents. It needs more specific conditions to thrive.
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