Troubleshooting
Delicious Begonia problems — and how to fix them
Delicious Begonia (Begonia deliciosa) 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.
Powdery mildew
White powdery coatings appear on leaves in conditions of low airflow and moderate humidity fluctuations; improve ventilation, reduce leaf wetting, and apply a sulphur-based or neem oil fungicide at the first sign.
Root rot
Overwatering or dense compost causes roots to rot rapidly; look for yellowing lower leaves and mushy stem bases, then repot into fresh dry mix after trimming all rotten material with a sterile blade.
Prevent delicious begonia problems before they start
Most delicious begonia issues are care-mismatch, not bad luck. Dial in the basics:
Delicious Begonia problems — FAQ
Why is my delicious begonia powdery mildew?
White powdery coatings appear on leaves in conditions of low airflow and moderate humidity fluctuations; improve ventilation, reduce leaf wetting, and apply a sulphur-based or neem oil fungicide at the first sign.
Why is my delicious begonia root rot?
Overwatering or dense compost causes roots to rot rapidly; look for yellowing lower leaves and mushy stem bases, then repot into fresh dry mix after trimming all rotten material with a sterile blade.