Troubleshooting
Begonia dregei problems — and how to fix them
Begonia dregei (Begonia dregei) 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.
Caudex/root rot
Soft, blackening base from overwatering or a heavy mix; this semi-succulent stores water, so let the soil dry well and use a gritty, free-draining medium.
Leggy growth
Stretched, weak stems from insufficient light; move to brighter indirect light and prune to maintain the compact, woody bonsai-like shape.
Leaf drop
Sudden leaf loss after cold drafts, sharp temperature swings or letting it dry out completely; keep conditions stable and warm.
Powdery mildew
White film on foliage in still, humid air; improve airflow, avoid wetting leaves and space plants apart.
Prevent begonia dregei problems before they start
Most begonia dregei issues are care-mismatch, not bad luck. Dial in the basics:
Looking for the species overview? Begonia — the full care guide.
Begonia dregei problems — FAQ
Why is my begonia dregei caudex/root rot?
Soft, blackening base from overwatering or a heavy mix; this semi-succulent stores water, so let the soil dry well and use a gritty, free-draining medium.
Why is my begonia dregei leggy growth?
Stretched, weak stems from insufficient light; move to brighter indirect light and prune to maintain the compact, woody bonsai-like shape.
Why is my begonia dregei leaf drop?
Sudden leaf loss after cold drafts, sharp temperature swings or letting it dry out completely; keep conditions stable and warm.
Why is my begonia dregei powdery mildew?
White film on foliage in still, humid air; improve airflow, avoid wetting leaves and space plants apart.