Tomato Seedlings With Yellow Leaves (Explained)

tomato seedlings with yellow leaves
tomato seedlings with yellow leaves

If you are one of the people who are growing the vegetable garden at home, we are certain that you would be planting and growing tomatoes. However, planting tomatoes is no joke because a small mistake can result in tomato seedlings with yellow leaves issue. If your tomato seedlings have yellow leaves, you can read this article to prevent further damages.

Tomato Seedlings With Yellow Leaves:

Why Are Leaves Turning Yellow?

There are multiple reasons why tomato seedlings would have yellow leaves. To begin with, the issue can be caused by over-watering and under-watering the tomato plants. In addition to the watering issue, the deficiency of nitrogen and the absence of sunlight are also possible causes of yellow leaves. On the other hand, the leaves tend to turn yellow when winters start. For this reason, there are different solutions that can prevent and reverse the yellowing of leaves!


When it comes down to tomato seedlings, you must only water them when it’s needed. Keep in mind soggy soil is the biggest enemy of tomato plants. The ideal solution is to water the soil only when it’s dry. Generally, tomato plants do well if 1-inches to 2-inches water is added to the planter in a week. However, you can reduce or increase the watering according to climate and weather.


In the majority of cases, tomatoes keep ripening the fruit all around the year. However, during the winters, tomato plants will have a hard time supporting new blossoms. That being said, you should trim off the new flowers and blossoms to ensure the plant uses all its power to develop the plant. Moreover, you should trim the yellow stems and dead leaves. As a result, the tomato seedlings will become healthier by increasing the overall airflow.

Mulch Or Compost

With tomato seedlings, you should use homemade compost or mulch for increasing the plant’s productivity. For this reason, you should dress the plant’s soil to ensure it has sufficient nutrients to support new growth. The utilization of homemade compost and mulch will eliminate the need to use fertilizer, and it’s great for organic plants. In addition, mulching will help retain the moisture level of the soil, promising better plant growth.


We have mentioned that nutrients can help increase the growth of tomato seedlings. For the same reason, you can use fertilizers in the plant to reverse the yellowing of the leaves. The best option is opting for a cottonseed meal because it has a perfect combination of nitrogen, potassium, and phosphorus. In addition, these fertilizers have sulfur, calcium, copper, manganese, zinc, and magnesium which supports plant growth. Lastly, you can opt for fish emulsion because it’s a natural fertilizer and doesn’t pose any harm to the plant.


If your tomato plant is under a pest infestation, it could be why the leaves are turning yellow. For this reason, you should get in touch with the nearest agricultural or farming extension and ask them for support on the topic. It’s best that you don’t experiment with the medicines on your own because specialized people will prescribe the pest-focused medication for the plant!

Leave a Comment