Troubleshooting
Lopsided Begonia problems — and how to fix them
Lopsided Begonia (Begonia obliqua) 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.
Leaf drop from cold or draughts
Sudden leaf loss often follows a cold draught, an open window in winter, or temperatures dropping below 13 °C; move the plant to a stable, warm position away from radiators and draughts.
Powdery mildew
White powdery patches on leaf surfaces develop in conditions of poor air circulation with stagnant humidity; space plants well apart and remove badly affected leaves promptly.
Prevent lopsided begonia problems before they start
Most lopsided begonia issues are care-mismatch, not bad luck. Dial in the basics:
Lopsided Begonia problems — FAQ
Why is my lopsided begonia leaf drop from cold or draughts?
Sudden leaf loss often follows a cold draught, an open window in winter, or temperatures dropping below 13 °C; move the plant to a stable, warm position away from radiators and draughts.
Why is my lopsided begonia powdery mildew?
White powdery patches on leaf surfaces develop in conditions of poor air circulation with stagnant humidity; space plants well apart and remove badly affected leaves promptly.