Troubleshooting
Creeping Begonia problems — and how to fix them
Creeping Begonia (Begonia repens) 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.
Stem rot and collapse
Creeping stems blacken and rot where they contact saturated compost or where water pools in the growing medium. Ensure the mix drains freely, never let the pot stand in water, and improve air circulation around the stems.
Powdery mildew
A white powdery coating on leaves and stems develops in stagnant, humid air. Improve ventilation — using a small fan on low in enclosed spaces helps — remove affected growth, and avoid overhead watering.
Leaf-edge browning in dry air
In low-humidity environments (below 50% RH), leaf margins turn brown and papery. This is a watering issue only rarely; more often it reflects dry central heating. Raise humidity with a humidifier or move the plant to a more humid location such as a bathroom.
Prevent creeping begonia problems before they start
Most creeping begonia issues are care-mismatch, not bad luck. Dial in the basics:
Creeping Begonia problems — FAQ
Why is my creeping begonia stem rot and collapse?
Creeping stems blacken and rot where they contact saturated compost or where water pools in the growing medium. Ensure the mix drains freely, never let the pot stand in water, and improve air circulation around the stems.
Why is my creeping begonia powdery mildew?
A white powdery coating on leaves and stems develops in stagnant, humid air. Improve ventilation — using a small fan on low in enclosed spaces helps — remove affected growth, and avoid overhead watering.
Why is my creeping begonia leaf-edge browning in dry air?
In low-humidity environments (below 50% RH), leaf margins turn brown and papery. This is a watering issue only rarely; more often it reflects dry central heating. Raise humidity with a humidifier or move the plant to a more humid location such as a bathroom.