Troubleshooting
Looking Glass Begonia problems — and how to fix them
Looking Glass Begonia (Begonia 'Looking Glass') 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.
Mealy bugs
These sap-sucking pests cluster in leaf axils and along canes, secreting honeydew that leads to sooty mould; treat early with isopropyl alcohol on a cotton swab and follow up with neem oil applications.
Leaf edge browning
Crispy brown leaf margins indicate low humidity or fluoride/salt build-up in the compost; flush the pot with clean water periodically and increase ambient humidity.
Stem elongation (etiolation)
Canes stretch and become weak when light is insufficient; move the plant closer to a bright window or supplement with a grow light to encourage compact, vigorous growth.
Prevent looking glass begonia problems before they start
Most looking glass begonia issues are care-mismatch, not bad luck. Dial in the basics:
Looking Glass Begonia problems — FAQ
Why is my looking glass begonia mealy bugs?
These sap-sucking pests cluster in leaf axils and along canes, secreting honeydew that leads to sooty mould; treat early with isopropyl alcohol on a cotton swab and follow up with neem oil applications.
Why is my looking glass begonia leaf edge browning?
Crispy brown leaf margins indicate low humidity or fluoride/salt build-up in the compost; flush the pot with clean water periodically and increase ambient humidity.
Why is my looking glass begonia stem elongation (etiolation)?
Canes stretch and become weak when light is insufficient; move the plant closer to a bright window or supplement with a grow light to encourage compact, vigorous growth.