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How to Manage Pests

Pests in Gardens and Landscapes

Eutypa dieback—Eutypa lata

Eutypa dieback delays shoot emergence in the spring, and causes chlorosis, stunting, and tattering of leaves. Characteristic wedge-shaped, darkened cankers develop in the vascular tissue of wood.

Identification | Life cycle

Solutions

Eliminate all infected wood of grape, stone fruit, or other known hosts to reduce the risk of this disease. Prune directly after a rain because the risk for infection is lowest at this time. Hand paint or spray large pruning wounds with fungicide as soon as possible after pruning and before rain. Prune late in the dormant season to promote rapid healing of wounds.

Stunted shoots
Stunted shoots

Developing canker in the vascular tissue
Developing canker in the vascular tissue

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