if you are a beginner or experienced gardener. you may follow the tomato plant leaves turning yellow. Although it is a matter of panic. But if you follow some guidelines. you can prevent it. There are many reasons for the yellow leaves of tomato plants. Some reasons are natural and many are harmful to the plant.
For that, you should find out the main reason for the yellow leaves of your tomato plant.
In this sort of article, you get here all the reasons for your tomato plant leaves turning yellow with prevention methods. So no more late, now start reading to know all the secret tips.
Common Causes of tomato plant leaves turning yellow
According to the vegetable specialist in Dallas Joe Masabni, PhD, Texas A&M AgriLife, it is natural that. When the plants grow up the lower or old leaves turn yellow and die off.
But if the upper leaves or new Leaves turn yellow that means something is wrong. Such as Cotyledon, Nutrient Deficiency, Watering Issues, insect attacks etc. To know the actual reason and solving options for tomato plant leaves turning yellow please scroll below.
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1. Cotyledons ( First leaves/old leaves)
As you can see the bottom leaves of your tomato plant turn yellow. Then take it normally and botanically it’s called cotyledons. When a plant grows the first leaves start to pale green or yellow and day by day fall on.
It is the process of growing plants and doesn’t indicate any problem. After some days the cotyledons fall down and grow a set of new or baby leaves.
No need to do anything. It will be naturally solved.
2. Watering issues
Watering problems are a common reason for yellow leaves. Over and low water can cause it. So, you follow the water flow.
Low water: when your tomato plant cannot get water then it will stress. The yellow leaves are the first sign of it. The other signs are leaf drops, leaves smaller than normal, unwanted flowers falling etc. If you can see anyone’s sign. You need to provide enough water for your tomato plants.
Over water: Enough and over, the two words are not the same. Enough water makes your plant healthy and overwater can cause many problems. Tomato plants turning yellow is one of them. Many times over water makes the leaves yellow with brown spots. After some days the leaves can drop. Not only that, Overwater may cause root rot, blossom, fruit cracking etc.
To free from these problems, you Should water deeply in your tomato plants. But you need to follow the top inch of soil dry. Deep water provided after a few days is better than lightly watering every day. As well as you Should mulch around your tomato plants. It helps to retain moisture and reduce evaporation of the plants.
Use drip irrigation as another best option for watering your tomato plants. It directly applies to the water root of the plants. Especially in the season of hot weather, it is very helpful. Because, at this time the tomato plants need a lot of water.
3. Tomato plants Disease
Usually, tomato plants can sick of many diseases. The tomato plant turning yellow is a common problem. It can be the cause of early blight. The Early blight is a disease, it’s caused by the fungus Alternaria solani. It always starts at the bottom and moves to the upper part of the Plants. Without early blight diseases. The tomato plants turning yellow have many diseases. Such as Fungal Diseases, Bacterial Wilt, Verticillium wilt, Septoria leaf spot etc.
Early Blight Disease
It is a fungal disease of tomato plants. For this early blight disease tomato, stem and leaves will be yellow. As you can see, the bottom leaves are small with brownish/ black spots. So it is the first sign of early blight. Finally, the sports turn yellow and die.
To prevent the early blight you should properly take care of your tomato plants. As well as it is important to fertilise well. Another matter is that sometimes tomato fields have too much fungus. As a result, The plants can be frequently infected. For this reason, you should rotate your crops every two years.
The bacterial wait is a bacterial infection. Which may be responsible for your tomato plants turning yellow. It mainly wastes the vascular system. Of that, the water and nutrients can’t reach the tomato plants’ leaves. After that, the leaves turn yellow. However, the leaves recover at night. But finally, it can’t survive and falls down.
It is very difficult to control. Because in the Winter season, the bacterial wilt can increase. Until spring it can live and in this season attack the new plants. Free from it, you should immediately remove the attacked plants. So that it can’t spread. As well as bring change to your crops.
Septoria leaf sports
Septoria leaf spots are creat by the fungus Septoria lycopersici. It is a common fungal disease of tomato plants turning yellow. It directly attacks the leaves, usually older leaves. Firstly the lower leaves and make grey or dark brown. After the leaves become yellow and die. But, it is a matter of joy, This infection doesn’t attack the tomato.
When you can see the first sign. As soon as possible you should provide a fungicide. As well as ensure enough air circulation. It is time, you need to follow that, when you water the plants, you shouldn’t wet the leaves.
4. Nutrition deficiency
Nutrient is the most important element for plant growth and health. Without it your plants suffer nutrition deficiency. As a result, your tomato plants can’t give you enough fruit. As well as failing to fulfil your requirement and hope. Commonly your Tomato plants turning yellow lack nitrogen, magnesium, iron etc.
Lack of Nitrogen
Nitrogen is an important nutrient Which helps to produce chlorophyll. You know that chlorophyll gives green colour to the plant’s leaves. If your plant can’t get enough nitrogen, the plants suffer from nitrogen deficiency. For that, your tomato plants turn yellow easily. Not only nitrogen deficiency may cause poor fruit. Finally, the plants can die.
If you think your tomato plants suffer nitrogen deficiency. Then you Should apply some organic matter to the soil. To improve plant quality and growth, you need to apply fertiliser frequently with a balanced ratio. When you provide fertiliser, you must follow Manufacturers.
Lack of Iron
If you find out, tomato plants turn yellow with green veins. That means there is a lack of iron. Iron also helps to produce chlorophyll and make leaves green. If your tomato plants face iron deficiency you Should urgently recover it.
Recovering from iron deficiency needs to add more iron. For that, you can use some easy methods. First is using iron-rich fertiliser. 2nd is the use of iron sulphate or iron chelate. It is more effective because you can apply it directly to the leaves of plants. Here produce chlorophyll, for that leaves get green colour quickly. But you should remain that over-iron is harmful to your tomato plants.
Lack of Magnesium
Magnesium is also another essential element for tomato plants. It also plays a role in producing enough chlorophyll. For lack of magnesium, your tomato plants can turn yellow and die. So, when you feel that, your tomato plants need enough magnesium. Try as soon as possible to recover it.
Recovering magnesium is more accessible than others. For that, you need some Epsom salt. After that, you can apply it as a spray or adding to the soil. In this time of spray make, ensure that the solution is one teaspoon per gallon of water.
5. Transplant Shock
When you transplant your Tomato plants from one place to another. At this time the roots may damage the plant. For this, the first leaves turn yellow and wilt. It’s known as transplant Shock.
Free from transplant Shock you Should ensure that when you transplant the root Isn’t damaged. As well as wait until warm weather to transplant the plants.
6. Soil Compaction
It is another reason for your tomato plants turning yellow. When the soil is too hard and thick around the tomato plants. The nutrition can’t reach the bottom of the root. As a result, the leaves lose their Green colour and get yellow.
Avoid Overwatering and walking on the soil around the tomato plants. The better option is mulch. Mulch can prevent soil compaction. Another option is using a fork and rototiller. It helps to aerate the soil. It reaches the nutrition and air circulation root of the Plants.
7. Lack of sunlight
Are your Tomato plant leaves turning yellow? Sunlight can cause it. To grow tomatoes, plants need six hours of sunlight per day. Otherwise, the leaves will be yellow.
If you feel, your tomato plants can’t get proper sunlight. You should immediately transplant to the sunniest location. Without a transplant, you can use grow light to give enough light.
5 Best Tips for Tomato plants healthy
For your healthy tomato plants, we provide below some effective tips:
- When purchasing tomato plants, ensure that they are disease-resistant and healthy.
- Before you add any necessary amendments, make sure to test the soil first.
- Take care not to over-fertilize your plants. The plant may even die as a result of this, as the leaves may turn yellow.
- Try not to utilize herbicides where you intend to develop tomatoes.
- When planting tomatoes, be aware of density.
By following these straightforward tips, you can keep your tomato plants sound and forestall yellow leaves.
Conclusions: Although the article is so short the information is too much effective. If you read it sincerely, Hopefully, you will be able to understand, why your tomato plants turning yellow. As well as we provide the best problem-solving options. Finally, take care of your plants and keep them healthy.
Why are the leaves on my tomato plant going yellow?
There are many causes, such as nutrient deficits, excessive or too deep watering, pests etc.
What nutrient inadequacies can result in yellowing tomato leaves?
Nitrogen, magnesium, and iron deficits are typical nutrient shortages that cause yellowing leaves in tomatoes.
How can I treat my tomato plants’ nutrient deficiencies?
You can apply the proper fertilizers or organic amendments.
Which frequent pests are responsible for the yellowing of tomato plant leaves?
Tomato plants can become infested by pests including aphids, whiteflies, spider mites etc.
What methods can I use to keep pests off my tomato plants?
Use organic methods like neem oil, insecticidal soaps, etc.
Can diseases cause tomato leaves to turn yellow?
Indeed, illnesses like an early curse, late scourge, and fusarium wither, may be responsible for tomato leaves..
Can tomato leaves turn yellow from overfertilization?
Yes, the leaf may be yellowing by overfertilizing, particularly with nitrogen-rich fertilizers.
Should I cut off my tomato plants’ yellow leaves?
Yes, tomato plants should have their yellow leaves removed.
Is it possible that yellowing leaves indicate ripening tomatoes?
No, yellowing leaves are not a sign that tomatoes are about to ripen.