Troubleshooting
Delta Pure White pansy problems — and how to fix them
Delta Pure White pansy (Viola × wittrockiana 'Delta Premium Pure White') 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.
Botrytis (grey mould)
Common in cool, damp conditions. Remove affected blooms and foliage promptly, improve air circulation, and avoid overhead watering. Apply a fungicide labelled for botrytis if the infection is widespread.
Aphid infestations
Colonies cluster on new growth and flower buds, causing distortion. Knock off with a strong water jet or treat with insecticidal soap. Ants farming aphids are a useful early indicator.
Heat-induced decline
Above 24 °C (75 °F) pansies become leggy, stop blooming, and may collapse. Cut back by one-third in mid-spring, water consistently, and expect a brief flush before summer heat ends the display.
Prevent delta pure white pansy problems before they start
Most delta pure white pansy issues are care-mismatch, not bad luck. Dial in the basics:
Looking for delta pure white pansy in general rather than its problems? Read the full delta pure white pansy care guide — light, water, soil and feeding.
Delta Pure White pansy problems — FAQ
Why is my delta pure white pansy botrytis (grey mould)?
Common in cool, damp conditions. Remove affected blooms and foliage promptly, improve air circulation, and avoid overhead watering. Apply a fungicide labelled for botrytis if the infection is widespread.
Why is my delta pure white pansy aphid infestations?
Colonies cluster on new growth and flower buds, causing distortion. Knock off with a strong water jet or treat with insecticidal soap. Ants farming aphids are a useful early indicator.
Why is my delta pure white pansy heat-induced decline?
Above 24 °C (75 °F) pansies become leggy, stop blooming, and may collapse. Cut back by one-third in mid-spring, water consistently, and expect a brief flush before summer heat ends the display.