Troubleshooting
Ringed Begonia problems — and how to fix them
Ringed Begonia (Begonia annulata) 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.
Botrytis (grey mould)
Cool, damp conditions with poor air circulation encourage Botrytis cinerea; remove dead leaves promptly, space plants well, and avoid overhead watering.
Vine weevil
Vine weevil larvae attack the rhizomes and roots, causing sudden wilting; inspect the root zone if the plant collapses unexpectedly and treat with a nematode drench (Steinernema kraussei) in late summer.
Prevent ringed begonia problems before they start
Most ringed begonia issues are care-mismatch, not bad luck. Dial in the basics:
Ringed Begonia problems — FAQ
Why is my ringed begonia botrytis (grey mould)?
Cool, damp conditions with poor air circulation encourage Botrytis cinerea; remove dead leaves promptly, space plants well, and avoid overhead watering.
Why is my ringed begonia vine weevil?
Vine weevil larvae attack the rhizomes and roots, causing sudden wilting; inspect the root zone if the plant collapses unexpectedly and treat with a nematode drench (Steinernema kraussei) in late summer.