Symptoms of gray mold on indoor plants
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Gray mold or Botrytis blight often begins with relatively large grayish to tan areas on older leaves or spent flowers.
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The dusty gray spores of the fungus are easily seen and infected areas can rapidly enlarge and cause tissue collapse.
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This fungus primarily infects older tissue and generally is not a serious pathogen unless infection conditions are ideal.
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Optimum infection conditions would include wet leaves, high humidity, cool temperatures and cloudy overcast days.
Management strategies
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Any method that will lower the humidity, decrease leaf wetness or increase air circulation will help to lessen the chances of infection.
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Watering should be done early in the day to allow leaf surfaces time to dry quickly.
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Space plants so that air can circulate between them to help reduce moisture.
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Registered fungicides can be used, but in most home conditions, removal of infected plant parts and adjustment of environmental conditions to drier conditions should help manage this disease.
