Greasy gray-green blotches on leaves that brown fast, white fuzz underneath in humidity, dark firm rot on fruit and tubers.
Cool, wet stretches in mid to late summer. Spreads on the wind and can wipe out a planting in days.
Jul Aug Sep
Remove and bag infected plants immediately - do not compost. Copper fungicide can slow it on healthy plants nearby.
Space for airflow, water at the soil line, grow resistant varieties, and rotate away from where tomatoes or potatoes grew.
The same products HomesteadSync recommends in the app for this problem.
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