My tomato plants are almost 6ft. tall with lots of tomatoes, my problem is the leaves are turning yellow.?

we water every 2 days cuz its so hot here in st. louis but i dont think thats it. what do you think is causing this. i bought some sevin and applied it but its too soon to tell if its working or not. can my plants recover from whatever is happening with them. all opinions are appreciated, thanks

My tomato plants are almost 6ft. tall with lots of tomatoes, my problem is the leaves are turning yellow.?
You may have insects as others have noted but it's all too possible that your plants are suffering from overwatering (does the soil an inch or so down get a chance to dry out?, is it sopping wet deeper?) Another thing is iron deficiency, that's also a cause of yellowing. If it's iron you can use Ironite, the thing I like about that is it's not possible to over do as with fertilizers in general. If it's been a while since you fertilized it may be time to do so.





I would not use pesticides unless i was certain there were bugs and then only if a mild solution of soapy water did not work. Interestingly enough i found i had a lot less of a bug problem when I had a bird feeder in the yard.
Reply:Why did you use sevin.? are there insects on them.? If not the yellowing of the leaves is natural. If the plants do not have bloom on them , they are mature and only need to ripen........God Bless.
Reply:Unless the yellow leaves go all the way up the plant and you can see some signs of insects, like webs or spots or shiny or fuzzy stuff, the sevin dust won't do anything. If the yellow leaves are mostly at the bottom of the plant, some of that is normal, but it may be also what is called early or summer blight. This is a fungus and can be treated by working cornmeal into the soil around the plants and spraying the plant with a 1 to 10 solution of milk to water.