Plant Doctor - Greenhouse Basil Downy Mildew
Greenhouse Basil Downy Mildew
Most common seasons
Late fall, winter and early spring.
A number of days with rains and high humidity, especially originating from the Gulf of Mexico. Temperatures between 53°F and 77°F.
Basil types affected
Especially bad on sweet basil. Colored types and other species are not so susceptible.
Chlorotic (yellow) area in center (mid-rib) of leaf. May develop fuzzy gray growth on underside of leaves. In very conducive situations, fuzzy growth may be on upper leaf surface, as well.
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