The Q&A Archives: Yellow Leaves on Tomatoes

Question: I would appreciate some help on tomato plants. I am having a problem with young tomato plants that are yellowing. Is there anything I can do to stop that?

Answer: Yellowing leaves on tomato plants is quite common and can be caused by a variety of things, including transplant shock, ove-r or under-watering and lack of nitrogen. Tomatoes like rich, moist soil that's has plenty of organic matter and drains well. Tomatoes need nitrogen at the start of their growing 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, to a depth of 12-18 inches. I hope this information helps with your tomatoes!

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