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



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Begonia rex 'Red Bull' packs a lot of colour into a relatively tight plant, combining deep burgundy, dark green, and metallic silver in broad, heart-like leaves that always look charged and saturated. The visual effect is dense rather than airy, so Begonia rex 'Red Bull' works best when you want one mid-sized begonia to act as a strong block of colour in a grouping.
Its rhizomatous, bushy habit helps reinforce that impression, keeping the leaves layered and compact instead of spaced apart. For anyone looking for a red-forward rex with enough silver to keep the pattern readable, but not enough to cool it down too much, this cultivar hits that balance well.
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: 13 °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 rex
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.