How to Manage Pests

Pests in Gardens and Landscapes

Verticillium wilt—Verticillium dahliae

Verticillium wilt can affect all cucurbits. The first symptoms are wilting and yellowing of crown leaves, which eventually dry up. Wilting gradually progresses out toward the runner tips; in severe cases, the plant dies. Death may take weeks. A light brown vascular discoloration in roots is sometimes seen in cross section. Aboveground vascular tissue is also discolored and can be seen by cutting through a node near the base of the plant.

Life cycle


Avoid planting where potatoes, peppers, eggplants, tomatoes, or cucurbits have previously been planted. Some resistant varieties are available.

Wilting of cucumber plant
Wilting of cucumber plant

Tomato leaf affected by VerticilliumTomato leaf affected by Verticillium wilt


Statewide IPM Program, Agriculture and Natural Resources, University of California
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