Troubleshooting
Rex begonia problems — and how to fix them
Rex begonia (Begonia rex) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Crispy leaf edges
Low humidity or direct sun.
Mushy stems
Crown rot from water on the rhizome; let the surface dry between waterings.
Powdery mildew
Improve air movement and avoid wetting the leaves.
Faded colours
Either too much direct sun or too little light overall.
Prevent rex begonia problems before they start
Most rex begonia issues are care-mismatch, not bad luck. Dial in the basics:
Rex begonia problems — FAQ
Why is my rex begonia crispy leaf edges?
Low humidity or direct sun.
Why is my rex begonia mushy stems?
Crown rot from water on the rhizome; let the surface dry between waterings.
Why is my rex begonia powdery mildew?
Improve air movement and avoid wetting the leaves.
Why is my rex begonia faded colours?
Either too much direct sun or too little light overall.