Tomato plant leaves yellow - Ask Extension
I planted good tomato plants in large pots filled with Miracle-Gro potting soil. The plants are growing good, but the leaves are turning yellow with ...
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Tomato plant leaves yellow #873703
Asked June 18, 2024, 7:47 PM EDT
I planted good tomato plants in large pots filled with Miracle-Gro potting soil. The plants are growing good, but the leaves are turning yellow with spots. Could it be a virus or an insect? What spray should I use?
Tioga County New York
Expert Response
Hello Thomas, thank you for your question.
You stated that you used a large container; tomatoes need at least the size of a 5 gallon bucket.
As for the yellowing of the leaves, it could be the beginning of septoria leaf spot but symptomology isn't there yet. Attached is a fact sheet on septoria. Watch for symptoms. You can resubmit photos or a sample if needed.
https://extension.umd.edu/resource/septoria-leaf-spot-tomatoes/
Peggy, CCE Broome County Master Gardener Volunteer
