Troubleshooting
Begonia 'Bonfire' problems — and how to fix them
Begonia 'Bonfire' (Begonia boliviensis 'Bonfire') 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 patches in humid, still, crowded air. Improve airflow, avoid wetting the foliage, and remove affected leaves; this vigorous selection is fairly mildew-resistant but still benefits from good ventilation.
Baskets drying out
Hanging baskets dry fast in summer sun and wind, causing wilting and bud loss. Check daily, water thoroughly, and use a reservoir basket or water-retaining compost in exposed sites.
Tuber rot
Cold, wet compost or damp storage rots the tuber. Ensure sharp drainage, never leave pots waterlogged, and store cleaned dormant tubers dry and frost-free over winter.
Frost damage
Light frost blackens and kills the soft top growth. Move plants under cover before the first frost, then dry off and overwinter the tuber for replanting in spring.
Prevent begonia 'bonfire' problems before they start
Most begonia 'bonfire' issues are care-mismatch, not bad luck. Dial in the basics:
- Common boliviensis begonia problems — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Begonia 'Bonfire' watering schedule
- Begonia 'Bonfire' light requirements
- Best soil mix for begonia 'bonfire'
- Begonia 'Bonfire' temperature & humidity
- Full begonia 'bonfire' care guide
Looking for the species overview? Begonia — the full care guide.
Begonia 'Bonfire' problems — FAQ
Why is my begonia 'bonfire' powdery mildew?
White powdery patches in humid, still, crowded air. Improve airflow, avoid wetting the foliage, and remove affected leaves; this vigorous selection is fairly mildew-resistant but still benefits from good ventilation.
Why is my begonia 'bonfire' baskets drying out?
Hanging baskets dry fast in summer sun and wind, causing wilting and bud loss. Check daily, water thoroughly, and use a reservoir basket or water-retaining compost in exposed sites.
Why is my begonia 'bonfire' tuber rot?
Cold, wet compost or damp storage rots the tuber. Ensure sharp drainage, never leave pots waterlogged, and store cleaned dormant tubers dry and frost-free over winter.
Why is my begonia 'bonfire' frost damage?
Light frost blackens and kills the soft top growth. Move plants under cover before the first frost, then dry off and overwinter the tuber for replanting in spring.