Begonia rex 'Black Mambo' – Dramatic Foliage With Velvet Texture

Begonia rex 'Black Mambo' brings serious drama to any indoor plant collection with its dark, velvety leaves and swirling patterns. Deep ebony tones, subtle red undertones, and cream-colored stems create a striking contrast that catches the light beautifully. This compact, easy-care cultivar grows slowly, rewarding patience with stunning foliage. Its manageable size makes it perfect for shelves, desktops, or terrariums where every new leaf becomes a centerpiece.
Key Features of Begonia rex 'Black Mambo'
 
Foliage Texture: Thick, velvety leaves with a rich, light-reflecting surface
Size: Reaches about 30–40 cm tall and wide indoors
Stem Contrast: Cream-colored stems brighten the dark, moody foliage
Origins and Growth Traits
Begonia rex cultivars originate from hybrid breeding programs based on tropical Begonia species from regions like Assam, northern India, and southern China. 'Black Mambo' was selected specifically for its deep coloration and compact form. Indoors, it stays around 30–40 cm tall with a spreading, bushy growth pattern when given ideal conditions. It is toxic to pets and humans if ingested.
Care Guide for Begonia rex 'Black Mambo'
 
Placement: Bright, indirect light to maintain leaf color. Avoid direct sun exposure.
Light: Moderate to bright, filtered light keeps colors vibrant.
Watering: Allow the top 2–3 cm of soil to dry before rewatering. Avoid letting the roots sit in wet soil.
Humidity: Prefers humidity above 50%. Use humidifiers, pebble trays, or group with other plants.
Temperature: Best kept between 18–24 °C. Protect from sudden cold drafts.
Soil: Use a light, airy potting mix enriched with organic material and perlite.
Repotting: Every 2 years or when roots outgrow the pot. Choose shallow, breathable containers.
Fertilizing: Feed monthly during spring and summer with a diluted balanced liquid fertilizer.
Propagation: Easy from leaf cuttings placed in moist, well-aerated substrate.
Semi-Hydroponics: Adaptable with careful water level monitoring in LECA setups.
Pruning: Regularly remove faded or damaged leaves to encourage bushier growth.
Common Problems and Solutions
 
Pests: Spider mites and mealybugs can appear. Treat with insecticidal soap and wipe leaves gently.
Root Rot: Caused by overwatering. Ensure excellent soil drainage and moderate watering frequency.
Brown Leaf Tips: Often due to dry air. Raise humidity and avoid chemical-laden tap water.
Fungal Spots: Improve air circulation and avoid wetting the foliage directly.
Advanced Growing Tips
 
Maintain consistent humidity and avoid major temperature swings.
Use rainwater or distilled water to prevent mineral deposits on sensitive leaves.
Provide filtered light to prevent fading or bleaching of deep foliage colors.
Toxicity Information
Begonia rex 'Black Mambo' is toxic if ingested by pets or humans. Contains insoluble oxalates that can cause irritation. Always position out of reach of children and animals.
Etymology of Begonia rex 'Black Mambo'
The genus Begonia is named after Michel Bégon, a French administrator and botanical patron. The group name rex comes from Latin for “king,” honoring the regal appearance of these begonias. 'Black Mambo' refers to the cultivar’s deep, dark swirling leaf tones and bold visual impact.
Frequently Asked Questions About Begonia rex 'Black Mambo'
 
Can it survive lower light?It can survive but will lose intensity in leaf color. Bright, indirect light is ideal.
Does it flower?Yes, but the small blooms are secondary to its ornamental foliage.
How often should I replace the soil?Repot with fresh soil every 1–2 years to maintain root health and drainage.
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Ready to bring a touch of bold, velvety drama into your space? Shop Begonia rex 'Black Mambo' online now at Foliage Factory — your next unforgettable foliage centerpiece awaits!