Why Are Your Tomato Plants Going Yellow?

Tomato Yellowing tomato leaves
Tomato Yellowing tomato leaves from plantvillage.psu.edu


If you are a gardening enthusiast, you might have encountered the problem of yellowing tomato plants. It’s a common issue among tomato growers, and it can be frustrating to deal with. However, it’s essential to understand the causes of yellowing tomato plants to take the necessary steps to prevent them from happening.

Reasons for Yellowing Tomato Plants

There are several reasons why your tomato plants may be turning yellow. Below are some of the most common causes:

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Lack of Nutrients

Tomatoes require specific nutrients to grow and thrive. Lack of essential nutrients such as nitrogen, magnesium, and iron can cause the leaves to turn yellow. If you notice yellowing leaves, you may need to provide your plants with a fertilizer that contains these essential nutrients.

Overwatering or Underwatering

Tomato plants require a consistent level of moisture to grow healthily. Overwatering or underwatering can cause the leaves to turn yellow. If you notice yellowing leaves, check the soil’s moisture level and adjust your watering schedule accordingly.


Several diseases can cause yellowing tomato plants, such as Fusarium wilt, Verticillium wilt, and bacterial canker. If you suspect that your plants have a disease, remove them immediately to prevent the spread of the disease to other plants.

Prevention and Treatment of Yellowing Tomato Plants

Preventing yellowing tomato plants is easier than treating them. Below are some tips you can use to prevent yellowing tomato plants:

Provide Proper Nutrition

Make sure to provide your tomato plants with a balanced fertilizer that contains essential nutrients. You can also add compost to your soil to improve its nutrient content.

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Water Properly

Water your plants consistently, and avoid overwatering or underwatering. Make sure to water your plants at the base and not on the leaves.

Practice Good Garden Hygiene

Sanitize your gardening tools and equipment regularly to prevent the spread of diseases. Also, remove any dead or diseased plants from your garden to prevent the spread of diseases.


Yellowing tomato plants can be a frustrating problem to deal with, but with proper care and attention, you can prevent it from happening. By providing your plants with proper nutrition, watering them correctly, and practicing good garden hygiene, you can enjoy healthy and vibrant tomato plants.

Read Also: The Ultimate Guide to Nutrients For Weed Plants: Tips and Tricks for Abundant Harvests

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