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Botrytis Blight in Calibrachoa
How to identify and treat botrytis blight in Calibrachoa.
potted_plant
Calibrachoa care requirements
water
Water regularly when top inch of soil is dry; container plants may need daily watering in hot weather
soil
Light, well-draining potting mix with added perlite or sand for drainage
light
Full sun; requires 6–8 hours of direct sunlight daily for optimal flowering
symptoms
Symptoms to look for in Calibrachoa
- fiber_manual_recordFuzzy grey-brown mould on flowers, leaves, or stems
- fiber_manual_recordWater-soaked spots that turn brown and mushy
- fiber_manual_recordBlighted flower buds that fail to open
help
Common causes in Calibrachoa
Caused by the fungus Botrytis cinerea (grey mould), which thrives in cool, humid conditions with poor air circulation, often spreading rapidly on damaged or ageing plant tissue.
healing
How to treat botrytis blight in Calibrachoa
Remove and destroy all affected plant material immediately, improve airflow around the plant, and apply a fungicide labelled for Botrytis if the infection is spreading.
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Preventing botrytis blight in Calibrachoa
Avoid overhead watering and overcrowding, water at soil level, deadhead spent flowers promptly, and ensure good ventilation, especially in humid weather.