Troubleshooting
Wavy-Leaf Begonia problems — and how to fix them
Wavy-Leaf Begonia (Begonia angularis) 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.
Powdery mildew
Cane begonias are highly susceptible to powdery mildew in low-airflow or high-humidity-with-cool-temperatures conditions; improve air circulation and avoid wetting the foliage.
Root rot
Overwatering or poor drainage leads to stem base blackening and collapse; always use a pot with drainage holes and allow the soil surface to dry between waterings.
Prevent wavy-leaf begonia problems before they start
Most wavy-leaf begonia issues are care-mismatch, not bad luck. Dial in the basics:
Wavy-Leaf Begonia problems — FAQ
Why is my wavy-leaf begonia powdery mildew?
Cane begonias are highly susceptible to powdery mildew in low-airflow or high-humidity-with-cool-temperatures conditions; improve air circulation and avoid wetting the foliage.
Why is my wavy-leaf begonia root rot?
Overwatering or poor drainage leads to stem base blackening and collapse; always use a pot with drainage holes and allow the soil surface to dry between waterings.