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



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Begonia sp. U192 'Martin's Mystery' uses a dark burgundy-to-green background scattered or banded with bright silver, creating foliage that can look almost starry when humidity and light are balanced well. The plant grows from a shallow rhizome into a dense, low mound, so Begonia sp. U192 'Martin's Mystery' stays highly displayable in cabinets, terrariums, and close-up shelf placements.
Its exact lineage may be unclear, but the visual appeal is not: compact size, strong contrast, and a shimmering finish that changes subtly with angle. It suits collectors who want something rare and atmospheric rather than large, fast, or easily interchangeable with mainstream rex begonias.
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 creeping herb
Support
not needed
Growth speed
Slow
Max size indoors
Max. height: 25 cm • Max. spread: 25 cm
Toxicity & safety
Toxic
Origin & habitat
Cultivar of Begonia sp. U192
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.