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Botrytis Blight in Basil Thai
How to identify and treat botrytis blight in Basil Thai.
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Basil Thai care requirements
water
Keep soil evenly moist during growing season; water when top inch feels dry. Reduce in cooler months.
soil
Well-draining, fertile soil with pH 6.0–7.0; enriched with compost or potting mix.
light
Full sun (6–8 hours daily); requires intense light for best flavour development.
symptoms
Symptoms to look for in Basil Thai
- 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 Basil Thai
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.
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How to treat botrytis blight in Basil Thai
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 Basil Thai
Avoid overhead watering and overcrowding, water at soil level, deadhead spent flowers promptly, and ensure good ventilation, especially in humid weather.