DiseasehighJun–Sep
Late blight
Phytophthora infestans
This description was machine-translated.
How to spot it
You will find that the late blight is the most feared disease on tomato and potato. In warm wet weather the fungus spreads rapidly: first brown-grey spots on the leaves, then a white fuzz on the underside, finally rotting stems and fruits. Infected plants are often lost within a few days.
Prevention
You should keep the leaves dry: water only at the roots and place tomatoes under a roof. Ensure airy spacing, mulch the soil, and remove infected parts immediately. Grow potatoes and tomatoes not next to each other and maintain a four-year crop rotation.
Affected plants
These plants in our database are especially susceptible.
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