Latest Diagnosis
Tomato Disease
Submitted by Lyssa Seefeldt on 7/30/2014
Homeowner brought in tomato leaves, concerned about yellowing & browning. They also brought in a celery leaf with edge yellowing & browning and some cucumber leaves that had wind damage.

I asked when homeowner waters plants (evening) and suggested switching to early morning to help prevent fungal/other disease problems.

Homeowner would like to know what is going wrong with tomato & celery plants.

celery leaf yellowing & browning
close up of celery
brown spotted tomato leaf
tomato leaf yellowing
tomato leaf yellowing
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Reply by Brian D. Hudelson on 7/30/2014
Lyssa: The tomato leaf looks as though it has Septoria leaf spot (http://labs.russell.wisc.edu/pddc/files/Fact_Sheets/FC_PDF/Septoria_Leaf_Spot.pdf), but if you'd like to know for sure, get the leaves to me tagged as a "late blight" sample. The diagnosis will be free. The yellowing of the celery could be Fusarium yellows. This is a fungal disease (the fungus is Fusarium oxysporum) that colonizes the water-conducting tissue of the plant and interferes with water and nutrient flow to the leaves. Not much you can do at this point if this is the problem. Hope this helps. Let me know if you have questions. Brian (:))


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