Troubleshooting
Begonia 'Torch' problems — and how to fix them
Begonia 'Torch' (Begonia × 'Torch') 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.
Leggy, bare-stemmed canes
Lower leaves drop and stems flop in poor light. Provide brighter indirect light, stake the canes, and prune hard in spring to encourage bushy new shoots from the base.
Powdery mildew
White powdery patches on the dense foliage in humid, still air. Improve airflow, water at the soil, keep the leaves dry, and remove affected foliage.
Few flowers
Sparse blooming usually means too little light or under-feeding. Brighten the position and feed regularly through the growing season.
Root rot
Soggy soil rots the roots, causing wilting despite wet soil. Use a free-draining mix and pot, and let the surface dry before watering again.
Prevent begonia 'torch' problems before they start
Most begonia 'torch' issues are care-mismatch, not bad luck. Dial in the basics:
Looking for the species overview? Begonia — the full care guide.
Begonia 'Torch' problems — FAQ
Why is my begonia 'torch' leggy, bare-stemmed canes?
Lower leaves drop and stems flop in poor light. Provide brighter indirect light, stake the canes, and prune hard in spring to encourage bushy new shoots from the base.
Why is my begonia 'torch' powdery mildew?
White powdery patches on the dense foliage in humid, still air. Improve airflow, water at the soil, keep the leaves dry, and remove affected foliage.
Why is my begonia 'torch' few flowers?
Sparse blooming usually means too little light or under-feeding. Brighten the position and feed regularly through the growing season.
Why is my begonia 'torch' root rot?
Soggy soil rots the roots, causing wilting despite wet soil. Use a free-draining mix and pot, and let the surface dry before watering again.