Vegetable Research & Information Center, UC Cooperative Extension

Complex Tomato Diseases

Compiled by the California Tomato Research Institute, 1998

Click on the disease name for more information.

Bacterial Speck

Bacterial Spot

Bacterial Canker

Fusarium Crown Rot

Fusarium Foot Rot

Fusarium Wilt

Late Blight

Phytophthora Root Rot

Powdery Mildew


Verticillium Wilt



Photo credits:

  • Michael Davis
  • Tom Gordon
  • Don May
  • Gene Miyao
  • Robert Mullen
  • Jesus Valencia
  • Charles Rivara
Information about the
California Tomato Research Institute


Division of Agriculture and Natural Resources, University of California.
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Development funding from the University of California and USDA, CSREES.
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Last updated: August 21, 2020
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