Rex Begonia
Begonia rex-cultorum
Rex Begonias are prized for their spectacular foliage rather than their blooms. These rhizomatous plants feature large, asymmetrical leaves with striking patterns of silver, pink, purple, and deep green. Often referred to as 'fancy-leaf' begonias, they add a dramatic, colorful touch to indoor gardens with their unique textures, fuzzy stems, and metallic sheens.
Light
Bright Indirect
Water
Moderate
Difficulty
Moderate
Humidity
High
Pet Warning
Toxic to dogs, cats, and horses. Contains soluble calcium oxalates which cause oral irritation, intense burning of the mouth, excessive drooling, vomiting, and difficulty swallowing. The rhizomes contain the highest concentration of toxins.
Care Guide
Rex Begonia Care Guide
Light: Provide bright, filtered light.
A north or east-facing window is ideal as direct sunlight will scorch the delicate foliage.
Watering: Keep the soil consistently moist but never soggy. Water when the top inch of soil feels dry to the touch. Avoid getting water directly on the leaves to prevent fungal diseases.
Humidity: High humidity (50% or more) is essential. Use a pebble tray or room humidifier. Avoid misting, which can lead to powdery mildew.
Soil: Use a light, porous potting mix that drains quickly while retaining some moisture.
Seasonal Care: In winter, the plant may enter a period of dormancy. Reduce watering and expect slower growth.
Common Issues: Watch for mealybugs and root rot. Ensure good air circulation around the foliage.
In-Depth Care & Growth
Feeding & Soil
Fertilizer
Balanced liquid houseplant fertilizer
Soil
A peat-based or coco-coir potting mix with perlite or vermiculite for drainage and aeration.
Physical Attributes
Mature Size
12-18 inches tall and wide
Growth Rate
Moderate
Propagation
Leaf cuttings, leaf vein cuttings, or rhizome division.
Common Varieties
Escargot
The 'Escargot' Rex Begonia is distinguished by its unique snail-shaped leaves that feature a dramatic, spiraling pattern of metallic silver and deep forest green.
Silver Limbo
The 'Silver Limbo' Rex Begonia features compact, pointed leaves with a shimmering metallic silver surface, subtle dark veining, and deep burgundy undersides.
Fireworks
The 'Fireworks' Rex Begonia features dramatic, pointed leaves with a central spiral, showcasing a striking contrast of deep burgundy centers, metallic silver zones, and vibrant purple margins.
Red Kiss
The 'Red Kiss' Rex Begonia features compact, heart-shaped leaves with a brilliant metallic red center dramatically framed by a broad, velvety purple-black border.
Spitfire
The 'Spitfire' Rex Begonia features pointed, asymmetrical leaves characterized by a vibrant pink-to-red center, a shimmering silver middle band, and a contrasting dark burgundy margin.