Houseplants
Rex Begonia
Begonia rex-cultorum
Grown purely for swirled metallic foliage, it wants humid air but dry-ish leaves - a fussy combo.
- Typical watering
- Every ~6 days
- Light
- medium to bright indirect
- Difficulty
- demanding
- Safety
- Toxic to cats and dogs
Care tips
- Water at the soil line when the top 2 cm dries; wet leaves invite mildew
- Raise humidity with a pebble tray, not misting
- Keep at 16-24°C; cold, wet soil rots the rhizome
- Give it a shallow pot - the rhizome creeps along the surface
Common questions
How often should I water a rex begonia? +
A healthy indoor rex begonia typically wants water every 6 days or so. Treat that as a starting cadence, not a rule — pot size, light, and season all shift it, so check the soil before you pour.
How much light does a rex begonia need? +
A rex begonia does best in medium to bright indirect light. If it stretches, fades, or stalls, adjust its spot before changing anything else.
Is a rex begonia toxic to cats or dogs? +
Yes — the rex begonia is considered toxic to cats and dogs (per the ASPCA plant lists). Keep it out of reach, and call your vet if you suspect a pet has chewed it.
Typical guidance for a healthy rex begonia — your own conditions (and your vet, for animals) come first.
Related guides
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