Q.What causes black spots on tomato plant leaves
We have heat resistant plants.

Downtoearthdigs
Answered on July 13, 2015
Hot damp weather is usually the issue. Temperature fluctuations and or lack of air circulation can also be issues.
Watering from above can also cause fungus issues.
Improper planting and lack of crop rotation can lead to fungus and disease.
Here are links with more information.
https://www.gardeningknowhow.com/edible/vegetables/tomato/early-blight-alternaria-tomato-leaf-spots-yellow-leaves.htm
https://www.gardeningknowhow.com/edible/vegetables/tomato/tomato-plant-problems.htm
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