Troubleshooting
Begonia 'Midnight Twist' problems — and how to fix them
Begonia 'Midnight Twist' (Begonia rex-cultorum 'Midnight Twist') 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.
Powdery mildew
Rex begonias mildew in still, humid air. Provide airflow, keep foliage dry, and remove infected leaves.
Rhizome rot
Overwatering or burying the rhizome causes soft black rot. Keep the rhizome surface-set and let the topsoil dry between waterings.
Leaf scorch
Direct sun fades and crisps the dark spirals. Move to bright indirect light.
Leaf-edge browning
Dry household air crisps the margins. Raise ambient humidity rather than misting the foliage.
Prevent begonia 'midnight twist' problems before they start
Most begonia 'midnight twist' issues are care-mismatch, not bad luck. Dial in the basics:
- Common rex begonia problems — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Begonia 'Midnight Twist' watering schedule
- Begonia 'Midnight Twist' light requirements
- Best soil mix for begonia 'midnight twist'
- Begonia 'Midnight Twist' temperature & humidity
- Full begonia 'midnight twist' care guide
Looking for the species overview? Begonia — the full care guide.
Begonia 'Midnight Twist' problems — FAQ
Why is my begonia 'midnight twist' powdery mildew?
Rex begonias mildew in still, humid air. Provide airflow, keep foliage dry, and remove infected leaves.
Why is my begonia 'midnight twist' rhizome rot?
Overwatering or burying the rhizome causes soft black rot. Keep the rhizome surface-set and let the topsoil dry between waterings.
Why is my begonia 'midnight twist' leaf scorch?
Direct sun fades and crisps the dark spirals. Move to bright indirect light.
Why is my begonia 'midnight twist' leaf-edge browning?
Dry household air crisps the margins. Raise ambient humidity rather than misting the foliage.