Troubleshooting
Begonia 'Nonstop Red' problems — and how to fix them
Begonia 'Nonstop Red' (Begonia × tuberhybrida 'Nonstop Red') 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
White powdery coating on leaves in humid, crowded, still air. Space plants for airflow, avoid wetting foliage, and remove affected leaves; treat persistent cases with an appropriate fungicide.
Bud drop
Double buds drop in heat stress, erratic watering, or persistent damp. Provide light afternoon shade, keep moisture even, and shelter plants from heavy rain that batters the blooms.
Tuber rot
Cold, wet compost or damp storage rots the tuber. Ensure sharp drainage, avoid overwatering, and store cleaned dormant tubers dry and frost-free over winter.
Botrytis (grey mould)
Grey fuzzy rot on dense flowers and stems in cool, damp, stagnant conditions. Improve ventilation, remove spent blooms and dead leaves promptly, and avoid overhead watering.
Prevent begonia 'nonstop red' problems before they start
Most begonia 'nonstop red' issues are care-mismatch, not bad luck. Dial in the basics:
Looking for the species overview? Begonia — the full care guide.
Begonia 'Nonstop Red' problems — FAQ
Why is my begonia 'nonstop red' powdery mildew?
White powdery coating on leaves in humid, crowded, still air. Space plants for airflow, avoid wetting foliage, and remove affected leaves; treat persistent cases with an appropriate fungicide.
Why is my begonia 'nonstop red' bud drop?
Double buds drop in heat stress, erratic watering, or persistent damp. Provide light afternoon shade, keep moisture even, and shelter plants from heavy rain that batters the blooms.
Why is my begonia 'nonstop red' tuber rot?
Cold, wet compost or damp storage rots the tuber. Ensure sharp drainage, avoid overwatering, and store cleaned dormant tubers dry and frost-free over winter.
Why is my begonia 'nonstop red' botrytis (grey mould)?
Grey fuzzy rot on dense flowers and stems in cool, damp, stagnant conditions. Improve ventilation, remove spent blooms and dead leaves promptly, and avoid overhead watering.