Tomatillo Leaves Turning Yellow – Reasons and Solutions

Why tomatillo leaves turn yellow?

Tomatillo leaves turn yellow because of nutrient deficiency. If your plants aren’t getting enough nitrogen, magnesium, or potassium, their leaves will start to show signs of deficiency. This can be remedied by adding a fertilizer that contains those nutrients to your plants’ soil.

If you’re growing tomatillos, it’s important to be aware of the signs that something may be wrong. One common sign is leaves that are turning yellow. This can be caused by a number of factors, from pests and diseases to nutrient deficiencies. By identifying the cause of the problem and taking corrective action, you can get your tomatillos back on track.

In this article, we’ll take a look at some of the reasons why tomatillo leaves may turn yellow and what you can do to address the issue. Let’s get started!

Reasons tomatillo leaves turn yellow

Tomatillo leaves naturally turn yellow as they age; however, if you’re seeing significant yellowing and the leaves are dropping off your plants, there’s likely a problem. The following are some of the most common reasons tomatillo leaves turn yellow:

Nutrient Deficiencies



Environmental Stress

Nutrient deficiencies

One of the most common reasons for yellowing tomatillo leaves is a nutrient deficiency. Tomatoes are heavy feeders and require regular fertilization to stay healthy and produce bountiful fruit. If your plants are not getting enough nutrients, their leaves will begin to turn yellow and eventually drop off.

The best way to correct a nutrient deficiency is to fertilize your plants regularly with a balanced fertilizer. You may also boost the soil’s nutritional value by adding organic matter. A soil test can help you determine which nutrients your plants are lacking and what type of fertilizer would be best for your garden.


Pests can also cause yellowing tomatillo leaves. Aphids, whiteflies, and other sucking insects feed on the sap of tomatillo plants and can cause the leaves to turn yellow and eventually drop off. These pests can also introduce diseases to your plants, so it’s important to deal with them as soon as you notice them.

The best way to control pests is to use an organic insecticide or row cover. Organic insecticides are made from natural ingredients and are less harmful to plants and people than synthetic pesticides. Row covers are thin fabric sheets that you can place over your plants to keep pests out.


Diseases can also cause tomatillo leaves to turn yellow and drop off. The most common diseases that affect tomatillo plants are early blight, Septoria leaf spot, and bacterial wilt. These diseases can be caused by fungi or bacteria and are often spread by pests.

The best way to prevent diseases is to practice good crop rotation and avoid planting tomatillo plants in the same spot every year. You should also remove any affected leaves from your plants and destroy them to prevent the disease from spreading. If you notice any other signs of disease, such as mold or mildew, you should contact your local cooperative extension office for more information.

Environmental Stress

Environmental stress can also cause tomatillo leaves to turn yellow. If your plants are not getting enough water or if they’re exposed to too much direct sunlight, their leaves may start to turn yellow. Make sure you’re watering your tomatillo plants regularly and providing them with some shade if they’re in direct sunlight for most of the day.


The tomatillo leaves turning yellow is a problem that should not be taken lightly. There are several causes for this, but you can get your plants back on track with some simple changes to their care. Be sure to inspect your plants for pests and diseases, and correct any nutrient deficiencies. With a bit of effort, you can have healthy tomatillo plants in no time.

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