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Extension > Garden > Commercial fruit and vegetable production > Plant diseases > Fusarium wilt

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Fusarium wilt

Anna Johnson, Michelle Grabowski and Angela Orshinsky

E. Sikora, Auburn University,

Yellowing leaves due to Fusarium wilt


The fungus Fusarium oxysporum f. sp. lycopersici

Host range

Tomato, eggplant and pepper. Can also survive on weeds such as pigweed, mallow, and crabgrass.


Signs and symptoms

M. Grabowski, UMN Extension

Discolored veins due to Fusarium wilt


Biology and disease cycle


Resistant varieties

There are many varieties with resistance to Fusarium wilt. Fusarium oxysporum f. sp. lycopersici has three races; race 1, race 2, and race 3. Some tomato varieties may be resistant to one race, yet completely susceptible to another. Most seed catalogues indicate resistance to Fusarium and which of the 3 races the variety is resistant to.

Varieties without resistance can be grafted onto disease resistant root stock.

The fungal pathogen may be present in resistant plants even if they do not show any symptoms. For this reason, planting resistant varieties should not be considered a rotation away from susceptible tomatoes.

M. Grabowski

Fusarium wilt in front group of heirloom tomatoes; resistant variety in back

Cultural control

Chemical control

There are currently no pesticides that provide control of Fusarium wilt.


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