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What is with the Yellow Leaves on tomato plants?

If you have a vegetable garden and have planted tomatoes, you might be looking at the yellow leaves on your tomato plants and asking what do yellow leaves on tomato plants mean? Tomato plants leaves turn yellow for a myriad of reasons. Yellow leaves on your tomato plants does not always mean that they are not doing well, so lets look at what may be causing the leaves to turn yellow on your tomato plants.

When a few leaves turn yellow at the bottom of the plant, it could be just a simple fix. This will happen when there is not enough sun, or not enough nutrients are getting to the leaves from the soil. It is more apt to happen when the tomato plants are heavy with fruit as it matures.
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Yellow Leaves on tomato plants can be any of these symptoms and more:

  • Not enough water
  • Lack of nitrogen
  • Presence of a fungus or other bacterial problem
  • Other tomato diseases
  • Pests
  • Overwhelming the tomato plant with multiple cures without discovering the problem first
  • Roots are too shallow, or do not have enough room to grow
  • Too much sun and not enough water.
  • Polluted water

There are still other things that may be a challenge for you, but the great thing is, you can ask questions. What are some of the things that you can do to help your tomato plant when all of a sudden yellow leaves on tomato plants show up.
You want to look at the rest of your garden or on your farm, as well as any other signs around your area. Do your neighboring farms or gardens have the same challenge as you? Is it just affecting your tomato plants or is it associated to the entire garden or farm?

Here are some simple solutions for yellow leaves on tomato plants

Lack of Nutrients in soil?

  • Add Composted material, or an organic fertilizer

Dry soil?

  • Water more often, or use a drip hose at a rate that will keep your plants hydrated

End of the growing season and your plant if flush with Juicy Organic Tomato’s?

  • remove the yellow leaves and get ready to enjoy the harvest!

Now for some of the harder challenges with yellow leaves on tomato plants

Pests eating your plants?

  • There are plants that attract beneficial bugs that eat the pests but still leave your plants alone.

Organic Pesticides? What the heck is that?

  • There are mixed reports about this, that is why I prefer to plant to attract beneficial bugs to eat the pests that eat my plants. (This could really open up a can of worms!)

Fungus among us?

  • Yellow leaves on tomato plants can be helped naturally. How to Garden Advice. Com has given great remedies that will help you with that. I could go over all of them, but once you read them, if you have not heard of them before, you will like the natural way to do your healthy organic vegetable gardening. The chemical option just is not for me!

Prepare your soil properly, rotate crops and keep other plant predators away from your garden.

Remember, we are looking to help you create an Organic Garden that will not only feed your customers, but also your family. A healthy Garden does not usually have insect infestations.

If you remember to grow your soil,

it will help you with the plants. One of the best things that we have done to keep our plants healthy and happy, is the use of Marigolds. The strongly scented ones will repel flea beetles when interplanted with eggplant.

Some people believe they also repel root nematodes but I couldn’t tell you if they really do or not. I plant them between my cole crops, (Brussels sprout, cabbage, cauliflower, collards, kale, kohlrabi, mustard, broccoli, turnips and watercress), but I’ve never had a problem with root nematodes, so I don’t know if this does anything. At best they help keep the roots healthy, as worst they improve the look and feel of the garden.

Also if your still having trouble yellow leaves on tomato plants, you can

Click Here

to get our book on “How to Grow Delicious Heirloom Tomatoes”,

and that will help you get started.



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  • micheal

    all the leaves are like a day glow yellow/greem but look healthy. the plant is flowering. any ideas? thanks micheal

  • Great Question Micheal,

    Can you tell me a bit more about your tomato plant? How big is it? What is the pH of the soil? What do you use to feed your plant with and how often?

    Is it an indeterminate (vine) plant or a determinate (bush) plant?

    Where do you live, and how do you determine if it needs more water?

    Since you did not say that the leave were curled, have you checked for pests?

    Flea beetles, white flies, aphids and tomato horn worms could be causing problems. Check the top and underneath of the leaves carefully for any signs of chewing. Also look for eggs, insects or their larvae. Is there any sticky substance on the bottom of the plant?

    If you want to send a picture, that would be great! We would all love to see and hear your story as well as find out what the cause was and how it is solved.

    Looking forward to hearing back from you!

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