Light
Bright indirect • approx. 10,000–20,000 lux




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Begonia 'Black Fang' is built around contrast: nearly black, serrated leaves radiate from rhizomes with a vivid green star in the centre, while red-tinged stems reinforce the dark palette. The plant stays compact, but the pointed lobes and hard-edged colour pattern give it a much sharper, more graphic presence than softer rex-type begonias.
Bright shade keeps the contrast strong without bleaching the surface, and a lightly moist, airy substrate prevents the rhizomes from rotting while still supporting steady leaf production. Higher humidity helps the edges stay clean, though stagnant, soggy conditions are a bigger threat than brief drying at the surface. Pink flowers can appear, but this cultivar is primarily about foliage shape, dark tone, and the dramatic way the central green star seems to glow against the rest of the blade.
Light
Bright indirect • approx. 10,000–20,000 lux
Water
Water when ~25–40% dry
Substrate
Fine but airy • Moisture-buffered • Balanced • Fine
Temperature
Ideal: 18–24 °C • Avoid below: 10 °C
Humidity
Humid 60–80 % +
Growth habit
rhizomatous begonia
Support
not needed
Growth speed
Average
Max size indoors
Max. height: 40 cm • Max. spread: 50 cm
Toxicity & safety
Toxic
Origin & habitat
Cultivar of Begonia
These metrics are standardised reference points. We compile them by reviewing and cross-checking multiple botanical and horticultural references, then refining them through real-world growing experience. Source links: Plant Care Resources.
Please use the values as guidance. Conditions vary by home, so the same plant can respond differently. For plant-specific context, read the full product description and browse our Plant Care Guides.
Your new plant has just travelled a long way and needs a calm start in its new home. For step-by-step unboxing and first-week care, check our after-delivery care guide. For deeper tips on how your plant settles in over the next weeks, read our houseplant acclimatization guide.