Diseases 
What are common tomato diseases?
10 Tomato Plant Diseases to Watch For
- Septoria Leaf Spot. Septoria leaf spot is one of the most common tomato plant leaf diseases.
- Anthracnose.
- Fusarium and Verticillium Wilt.
- Early Blight (Alternaria)
- Late Blight.
- Mosaic Virus.
- Blossom Drop.
- Blossom-End Rot.
How do I identify a tomato disease?
Identifying Tomato Plant Diseases –
How do you control fungus on tomato plants?
Tomato Gardening : How to Treat Fungus on Tomatoes –
What does fungus look like on a tomato plant?
Identifying the FungusCheck for dark, irregular, target-like spots on leaves that soon wither and drop. Late blight strikes during stretches of rainy, cool weather. On leaves, look for dark spots that spread quickly; on fruit, dark, irregular blotches cause tomatoes to rot and smell foul.