How to Manage Pests

Pests in Gardens and Landscapes

Fusarium wilt (Yellows of cabbage)—Fusarium oxysporum
f. sp. conglutinans

Fusarium wilt can destroy susceptible cultivars of cabbage; cauliflower, broccoli, and brussels sprouts are not known to be affected. Symptoms consist of the yellowing of the lower leaves, often on one side of the plant. These leaves later turn brown and drop off. A brown discoloration of the water-conducting tissues is characteristic of this disease. With time, the entire plant may yellow, wilt, and collapse.

Solutions

Once present, this fungus survives indefinitely in the soil. Avoid introducing the pathogen to clean fields. In areas where the fungus is known to occur, plant cabbage in spring or winter, as this fungus develops most rapidly at temperatures ranging from 75° to 85° F. Some resistant cabbage cultivars are available.

 

Fusarium yellows of cabbage
Fusarium yellows of cabbage


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

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