Troubleshooting
Begonia grandis subsp. evansiana problems — and how to fix them
Begonia grandis subsp. evansiana (Begonia grandis subsp. evansiana) 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.
Slow or late emergence
This species breaks dormancy late in spring; bare soil is normal until early summer, so avoid disturbing or assuming it has died.
Tuber rot over winter
Cold, wet, poorly drained soil rots the dormant tubers. Plant in free-draining soil and mulch the crown in colder zones.
Leaf scorch
Too much direct hot sun browns and crisps the foliage. Site in dappled or afternoon shade.
Powdery mildew
Can appear in dry, crowded, poorly ventilated sites. Improve spacing and airflow and avoid drought stress.
Prevent begonia grandis subsp. evansiana problems before they start
Most begonia grandis subsp. evansiana issues are care-mismatch, not bad luck. Dial in the basics:
- Common begonia grandis problems — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Begonia grandis subsp. evansiana watering schedule
- Begonia grandis subsp. evansiana light requirements
- Best soil mix for begonia grandis subsp. evansiana
- Begonia grandis subsp. evansiana temperature & humidity
- Full begonia grandis subsp. evansiana care guide
Looking for the species overview? Begonia grandis — the full care guide.
Begonia grandis subsp. evansiana problems — FAQ
Why is my begonia grandis subsp. evansiana slow or late emergence?
This species breaks dormancy late in spring; bare soil is normal until early summer, so avoid disturbing or assuming it has died.
Why is my begonia grandis subsp. evansiana tuber rot over winter?
Cold, wet, poorly drained soil rots the dormant tubers. Plant in free-draining soil and mulch the crown in colder zones.
Why is my begonia grandis subsp. evansiana leaf scorch?
Too much direct hot sun browns and crisps the foliage. Site in dappled or afternoon shade.
Why is my begonia grandis subsp. evansiana powdery mildew?
Can appear in dry, crowded, poorly ventilated sites. Improve spacing and airflow and avoid drought stress.