Why are the leaves on my tomato plants turning yellow?

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 higher up the plant take over and the older bottom leaves will die of.


however if all the leaves are turning yellow (hopefully the viens in the leaves first) this is an indication of magnesium deficiency. this is a very common problem with tomatos but is very easy to correct.magnesium sulphate is obtainable from any garden centre. also the plants should be fed with a liquid tomato feed and if given four times a week at quarter strengh this will be more benificial than a feed once a week as tomatos will need to be watered every day.

Why are the leaves on my tomato plants turning yellow?
sounds like you are getting water on the leaves and the sun is scorching them
Reply:maybe because they are dying?
Reply:All of the above answers are wrong. If you do some research on the Internet, you will find that there is a "root" disease that causes this to happen to tomato's. Google "tomato problems" and you will probably find a site that will explain it. Too much water will cause the leafs at the top of the plant to turn a bright yellow where they meet the stem. The yellow will gradually work it's way out toward the edge of the leaf. With sun and warm weather that will go away. I have grown tomato's for many years and have seen it all!!!!!
Reply:water temp. do this, or u may be watering too much, or they are drying out one.


Put some miracle grow on them.
Reply:too much water not enough nutrients(food)
Reply:my tomato leaves near the bottom of the plant only are doing that too! I thought maybe it was because my man is watering them too much? maybe?
Reply:my guess would be too much water xxx
Reply:Too much water. Lack of water. Lack of nutrients.





Tomatoes are very "hungry" plants. That's why people grow them in "Gro-bags" that have specially enriched soil.
Reply:It is because it is fruiting and they need nutrients, cut some small branches off neatly at the stem, and feed the plants very regularly. Tomato plants cannot be overwatered easily and love a soaking! Also feed once a week at least three times even. The yellow leaves may go green again if you feed them, but this will mean you are feeding the leaves, when really what you want is more fruit! Not a bunch of leaves! So take unwanted leaves off. Especially ones near the ground where there is less light.





Don't be scared to remove all the lower leaves in fact, and small branches which are just sapping the strength of the plant. Some gardeners remove every other branch and then the fruits on the remaining branches are usually better. Experiment with one or two of your tomato plants, and enjoy your lovely lycopene enriched fruits, and their health benefits!





Research shows that lycopene in tomatoes can be absorbed more efficiently by the body if processed into juice, sauce, paste and ketchup.


http://www.lycopene.org/