Troubleshooting
Woolly Bear Begonia problems — and how to fix them
Woolly Bear Begonia (Begonia leptotricha) is generally low-drama, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Botrytis (grey mould)
The densely hairy leaves trap moisture and dead plant material, making this species highly susceptible to Botrytis; ensure good air movement around the plant and promptly remove any yellowing or dead leaves.
Root rot
Heavy or waterlogged compost quickly causes root and basal stem decay; use a very free-draining mix and ensure the pot has ample drainage holes, checking that saucers do not hold standing water.
Prevent woolly bear begonia problems before they start
Most woolly bear begonia issues are care-mismatch, not bad luck. Dial in the basics:
Woolly Bear Begonia problems — FAQ
Why is my woolly bear begonia botrytis (grey mould)?
The densely hairy leaves trap moisture and dead plant material, making this species highly susceptible to Botrytis; ensure good air movement around the plant and promptly remove any yellowing or dead leaves.
Why is my woolly bear begonia root rot?
Heavy or waterlogged compost quickly causes root and basal stem decay; use a very free-draining mix and ensure the pot has ample drainage holes, checking that saucers do not hold standing water.