7 Reasons Why Your Tomato Leaves Are Curling?

Why Are My Tomato Leaves Curling?

If you’re new to gardening, you might be wondering why your tomato leaves are curling. It could be because your plant is suffering from a number of different problems, including too much water, lack of nutrients, or a fungal disease.

Whatever the reason, it’s important to identify and fix the problem as soon as possible, so your tomato plants can grow strong and healthy.

In this article, we’ll go over the 7 main causes of curling leaves on your tomato plants

What Is Tomato Leaf Curl?

The leaf curl of the tomato is similar to what it sounds like. Sometimes the leaves can curl down as well as the other way around. The leaves can grow in a variety of different shapes and sizes. You can sometimes see that the leaves are not as bright as they should be.

Tomato leaf curl is not a disease in and of itself, but a symptom of something attacking the plant. It’s possible that this is one of the nearly 20 identified viruses and it’s a sign of herbicide damage, lack of nutrients, or environmental distress.

The new growth of tomato plants is usually affected by viral infections and the mature lower leaves are usually affected by leaf roll. That is the main difference.

Incorrect Watering Techniques

Tomato plants are easy to grow. However, they can be very temperamental when it comes to watering. One of the most common problems that gardeners have is that their tomato plants turn yellow and develop a nasty leaf curl. This is caused by over-watering.

The single most important part of gardening is watering. You need to water your plants at least twice a day to keep them healthy and growing. If you don’t water your plants regularly, they will wilt and eventually die.

If you have ever had a plant with a yellowing leaf curl, it’s likely that you’ve over-watered. The reason why this happens is that the water evaporates from the leaves faster than the plant can use it. When that happens, the leaves begin to dry out and they curl up. The leaves can also turn yellow as a result of this.

 If you have a tomato plant that has developed a yellow leaf curl, you should immediately stop watering it. The reason why you need to do this is that the water will only make the problem worse.

If you wait too long to stop watering, you may actually kill your tomato plant.

There are two ways that you can deal with a tomato plant that has a yellow leaf curl. The first way is to cut off the affected leaves. This is not a good idea, as you could end up killing the plant.

It is possible to spray the plant with water. If you spray the plant with water, it will help it absorb more moisture.

Read more: 5 Signs Of Over Watered Tomato Plants

Excessive Heat Cause Tomato Plant Leaf Curl

Excessive heat is the cause that goes hand in hand with under-watering.

This problem is also caused by a lack of water. But it may not be the gardener’s fault entirely.

Tomatoes are one of the first fruits to come into season in the fall, but during hot weather, they are at risk of wilting if they are not kept properly protected.

When it’s above 85F constantly, your tomato plants are facing heat stress. This can cause leaf burning and fruit reduction.

The increased heat causes the rates of stomatal transpiration to increase, so the plant loses more water through the leaves.

The leaves curl inwards to protect the plant from the sun and prevent further water loss.

Several ways to keep your plants from overheating include: using shade cloths over windows, using fans to help cool your house, keeping your plants away from direct sunlight, etc.

You can install shade cloth over your plants to protect them from the sun’s hot rays, but then let them get full exposure to the sun during the hottest part of the day.

You can grow tomatoes successfully by planting them in containers and moving them to a shady spot.

Alternatively, you can wait until the heat is gone before it causes problems.

Leaves return to normal in colder weather.

Broad Mites

A broad mite is one of the most common causes of tomato leaves curling. If you don’t have magnification, you can’t see the tiny mites. There are heat stress, water stress, and root damage that can be confused with an insect.

It is a good idea to remove tomato plants from your garden if they are heavily infested with Broad Mite. It is important to destroy the plant.

The mites will be killed and there will be no more of them. If you want to save your plant, remove the damaged leaves, and spray it with organic insecticidal soap.

Read more: 10 Tomato Plant Pests Your Tomato Plants Hate

Too Much Nitrogen

For optimal tomato yields, a balanced fertilizer is recommended when planting your first few rows of tomatoes. Make sure you have a proper mix of nitrogen, phosphorus, and potassium.

A phosphorus and potassium fertilizer must be applied to the flowering and fruiting tomato plants at the time of transplanting. These two nutrients are vital for the development of flowers, berries, and fruits.

Too much nitrogen at this stage is not good for the leaves. If you apply too much, you’ll likely end up with curled leaves.

Plants that grow in nitrogen-rich soil produce more leaves.

In the early spring, the plant is producing leaves, so it’s at this point that this plant has its best chance of producing fruit.

Problems with extra nitrogen usually go away over time.

Most leaf curl isn’t actually damaging to the plant. If the plant shows signs of stress, it should be watered well. If that doesn’t work, it might be an issue of soil quality.

Preventing the spread of fungal diseases by following the tips in this guide should help you save money, time, and energy.

It’s always best to apply the right amount and kind of fertilizer when planting.

Always follow the directions exactly when applying fertilizer to plants. If you don’t, the results can be bad.

Excessive Pruning

You’re going to have to prune your tomato plants, either through natural means or by hiring a professional.

It’s essential for some gardeners, but not so important to others. Many gardeners think it does more harm than good.

Pruning has many benefits, but to get the most out of it, it’s important to prune healthy plants.

It can cause lots of problems, including leaf curl.

It’s important to prune your tomato plants at the appropriate time to ensure they get enough sunlight and grow properly.

This causes it to get a much-needed boost of energy, helping it to grow faster, but that increased growth means it’s also getting more sun

If your indeterminate tomatoes are growing slowly and producing few fruits, then you may want to pinch off the suckers between the main and lateral stems.

Removing very few leaves will not only improve growth but also air circulation.

It’s vital to exercise restraint when pruning.

If you take off more than is necessary, you’re likely to injure yourself and make your tomato plants less successful.

If your plant is in the process of recovering from an intense pruning session, leave it be for a few days, then come back to give it a

Any further interaction with the plant may damage it further.

Leaves should start coming back by the end of next week.

Transplant Shock

If you notice leaf curl in a tomato, it’s most likely a result of transplant shock. There is always a risk of root damage when tomato plants are moved to a new location. It is very delicate to grow tomato roots. root disturbance can be caused by even the smallest nick.

As the plant settles into its new spot, it may show signs of root damage, such as leaf curl, which is a symptom of this damage. Thankfully, transplant shock is not life-threatening. As with the other environmental causes, there is no need for much patience.

The plants will sort themselves out on their own over the next couple of weeks.

Read more: How to Transplant Tomato Seedlings: Tips for a Successful Start

Herbicide Exposure

If you apply 2,4-D or dicamba to your tomatoes, they can cause leaf curl if they come into contact with your tomatoes. When compared to the previous cases, the leaf curl is slightly different.

The leaves tend to twist around the stem when exposed to chemicals. New growth usually shows these signs first. There isn’t a way to recover leaves damaged in this way. The yield of the plant will be impacted if the damage is mild.

The plant won’t recover if the problem is severe. This issue is uncommon. Unless your garden is close to crops that are likely to be sprayed, damage from herbicides is not a problem.

One of the various diseases tomato plants are susceptible to is the cause of this abnormal leaf curl.


The leaves of the tomato yellow leaf curl virus are pale green or yellow at the edges.

This virus causes the leaves to turn in a cup-like fashion rather than rolling completely inwards as in stress-related cases. All of the tomatoes in your garden and any other tomato-related plants will be affected by this disease.

Unusual spotted coloring on the leaves is one of the symptoms of the tomato mosaic virus, which causes the leaves to roll inwards but is distinguished by other symptoms.

If your leaf curl problems aren’t solved by any of the previous fixes, you might be dealing with a viral infection.

As with many other tomato diseases, these can be very dangerous, spreading to other areas of your garden and causing chaos. The diseases will kill your plants in the long run, so any attempt to resolve the problem is pointless.

If you have identified any of the diseases that cause leaf curl, you should immediately remove the plant from the garden and destroy it.

Read more: Black Spots On Tomato Leaves – Should You Worry?

Can Tomatoes Recover from Leaf Curl?

Tomatoes can recover from leaf curl if treated correctly. If the leaves are curled severely, it is best to remove them completely and start over.

If the leaves are curling moderately, it is best to cut them off just below the stem and allow the tomato to heal itself.

If the leaves are curling moderately, it is best to cut them off just below the stem and allow the tomato to heal itself.

Should I remove curled tomato leaves?

When tomato leaf curling is due to a viral infection, it is necessary to remove the plants, even though the effects of tomato leaf curling do not affect the overall growth or crop yields of plants.

Summary Of Why Your Tomato Leaves Curling

The curling of a tomato leaf is an indication that there is a problem with the plant. The problem can be caused by a wide variety of factors, including the environment, the amount of light, the soil, or the amount of water the plant is receiving.

It can be difficult to identify the exact cause of a problem, but if you know what to look for, you can usually identify the problem and solve it.

Frequently Asked Question About Tomato Leaves Curling

Tomato Leaves Curling Under Grow Lights?

Tomato leaves will curl under grow lights if the plants are not well-hydrated. When the leaves are not getting enough water, they will start to curl under the light.

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