Why Are the Leaves on My Tomato Plants Turning Yellow?


The leaves on your tomato plants may be turning yellow due to insufficient nutrients from the soil, insufficient sunshine or due to a general lack of Nitrogen in the soil. Bacterial or fungal infections such as Alternaria alternata could also cause yellowing of the leaves.
Q&A Related to "Why Are the Leaves on My Tomato Plants Turning..."
Fungal leaf spots often cause yellowing tomato leaves. Septoria leaf spot (Septoria lycopersici) starts with small, tan-centered, dark spots. The scattered spots grow and yellow,
Not enough Magnesium in your soil. Magnesium ions are essential in chlorophyll, the 'pigment' that gives leaves their green coloration and thus also their light absorbing properties
It could be a symptom of micronutrients, I believe a couple of them cause those symptoms. If your plants are getting around 1" per week of water and the symptoms still exist
you dont say if the leaves are going yellow at the botom or all of the leaves? if it is the bottom leaves only then there is not a problem, as the plant grows bigger the newer leaves
1 Additional Answer
Ask.com Answer for: why are the leaves on my tomato plants turning yellow
Why Are My Tomato Plants' Leaves Turning Yellow?
Though tomatoes (Lycopersicon esculentum) are grown for their fruit, not their foliage, yellowing leaves should cause concern. Usually grown as annuals, tomato plants are susceptible to many diseases. Some harm only leaves, but others threaten the fruit.... More »
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