Troubleshooting
Olson's Begonia problems — and how to fix them
Olson's Begonia (Begonia olsoniae) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Humidity collapse — wilting and leaf curl
A sudden drop in ambient humidity below 55% causes leaf curling, edge browning, and wilting; return to a high-humidity enclosure immediately and remove any damaged foliage.
Botrytis (grey mould) in enclosed growing
Terrarium conditions can allow grey mould to build up on fallen leaf material; remove debris promptly, ensure some air exchange in the enclosure, and avoid overcrowding plants.
Prevent olson's begonia problems before they start
Most olson's begonia issues are care-mismatch, not bad luck. Dial in the basics:
Olson's Begonia problems — FAQ
Why is my olson's begonia humidity collapse — wilting and leaf curl?
A sudden drop in ambient humidity below 55% causes leaf curling, edge browning, and wilting; return to a high-humidity enclosure immediately and remove any damaged foliage.
Why is my olson's begonia botrytis (grey mould) in enclosed growing?
Terrarium conditions can allow grey mould to build up on fallen leaf material; remove debris promptly, ensure some air exchange in the enclosure, and avoid overcrowding plants.