Troubleshooting
Begonia 'Silver Jewel' problems — and how to fix them
Begonia 'Silver Jewel' (Begonia rex-cultorum 'Silver Jewel') 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.
Powdery mildew
Typical of rex begonias in humid, still air; white film coats the leaves. Increase ventilation and keep foliage dry.
Root and crown rot
Overwatering or a buried rhizome causes soft, collapsing growth; keep the rhizome exposed and let soil dry between waterings.
Crisp leaf margins
Dry indoor air browns the edges; raise humidity and keep away from heat sources and cold draughts.
Dull or faded silver
Metallic colour flattens in unsuitable light; provide steady bright indirect light out of direct sun.
Prevent begonia 'silver jewel' problems before they start
Most begonia 'silver jewel' issues are care-mismatch, not bad luck. Dial in the basics:
- Common rex begonia problems — the species this cultivar belongs to
- What's wrong with my plant? — the diagnosis apps compared
- Begonia 'Silver Jewel' watering schedule
- Begonia 'Silver Jewel' light requirements
- Best soil mix for begonia 'silver jewel'
- Begonia 'Silver Jewel' temperature & humidity
- Full begonia 'silver jewel' care guide
Looking for the species overview? Begonia — the full care guide.
Begonia 'Silver Jewel' problems — FAQ
Why is my begonia 'silver jewel' powdery mildew?
Typical of rex begonias in humid, still air; white film coats the leaves. Increase ventilation and keep foliage dry.
Why is my begonia 'silver jewel' root and crown rot?
Overwatering or a buried rhizome causes soft, collapsing growth; keep the rhizome exposed and let soil dry between waterings.
Why is my begonia 'silver jewel' crisp leaf margins?
Dry indoor air browns the edges; raise humidity and keep away from heat sources and cold draughts.
Why is my begonia 'silver jewel' dull or faded silver?
Metallic colour flattens in unsuitable light; provide steady bright indirect light out of direct sun.