tomatos - Knowledgebase Question

Palm Bay, Fl
Question by labadore
August 19, 2009
I have a tomato plant not yet bearing fruit. it has yellow spots all over the leaves. I have not fertilized it at all yet and I know it is not being over watered. It is planted in the topsy turvy pot. Can you please help me figure out what is causing the yellow spots and what I should use to treat it. thank you Julie


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Answer from NGA
August 19, 2009

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Yellow spots might be the symptom of early blight, a fungal disese. Or, it could simply indicate a need for nitrogen fertilizer. Tomato plants will often shed the lowest, oldest leaves as the plant grows. You can simply pull or clip these leaves off. In general, tomatoes like rich, moist soil that has plenty of organic matter and drains well. Tomatoes need nitrogen for green healthy leaves. Try fish emulsion for an organic source of nitrogen or use a balanced fertilizer, e.g., 10-10-10. Follow package instructions for application rates. Water well before and after applying. Tomatoes are moisture sensitive and need a regular supply of water to thrive and produce fruit. How often to water depends on your particular soil's characteristics. You want to keep it uniformly moist, but not soaking wet. I hope this information helps with your tomatoes!

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