Troubleshooting
Griffith's Begonia problems — and how to fix them
Griffith's Begonia (Begonia griffithii) 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.
Rhizome rot
Overwatering or poorly drained compost causes the rhizome to blacken and collapse; use a free-draining mix and ensure pots have adequate drainage holes.
Powdery mildew
Poor air circulation around the dense rosette encourages powdery mildew; space plants to allow airflow and avoid wetting the leaves when watering.
Prevent griffith's begonia problems before they start
Most griffith's begonia issues are care-mismatch, not bad luck. Dial in the basics:
Griffith's Begonia problems — FAQ
Why is my griffith's begonia rhizome rot?
Overwatering or poorly drained compost causes the rhizome to blacken and collapse; use a free-draining mix and ensure pots have adequate drainage holes.
Why is my griffith's begonia powdery mildew?
Poor air circulation around the dense rosette encourages powdery mildew; space plants to allow airflow and avoid wetting the leaves when watering.