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Why Are My Cherry Tomato Plant Leaves Turning Yellow?

Updated: April 24, 2022

Cherry tomato plants are pretty easy to grow, but they can still face some problems. One of the most common issues that gardeners face when growing cherry tomato plants is yellowing leaves. This can be frustrating for gardeners who have put time and effort into growing their plants. In this article, we will explore the reasons why cherry tomato plant leaves turn yellow and what can be done to prevent it.

Lack of Nutrients

One of the most common reasons why cherry tomato plant leaves turn yellow is a lack of nutrients. Specifically, nitrogen, iron, and magnesium deficiencies can cause yellowing in leaves. Nitrogen is an essential nutrient for plant growth and is responsible for the green color in leaves. If your cherry tomato plant is lacking nitrogen, the leaves will start to turn yellow from the bottom up. Iron deficiency can also cause yellowing in leaves but usually appears as yellowing between the veins of the leaf. Magnesium deficiency can cause yellowing in older leaves.

Overwatering

Overwatering can also cause yellowing in cherry tomato plant leaves. When you overwater your plants, the roots become waterlogged, and this can lead to a lack of oxygen getting to the roots. Without enough oxygen, the roots cannot absorb nutrients properly, and this can cause yellowing in leaves.

Underwatering

Underwatering can also cause yellowing in cherry tomato plant leaves. When you don’t water your plants enough, they become dehydrated, and this can cause stress on the plant. When a plant is stressed, it will start to conserve energy by shedding its leaves. This can cause yellowing in leaves.

Diseases

Diseases like bacterial spot and fusarium wilt can also cause yellowing in cherry tomato plant leaves. Bacterial spot is caused by a bacteria that forms small, water-soaked spots on the leaves that eventually turn yellow. Fusarium wilt is a fungal disease that causes yellowing in leaves, starting at the bottom of the plant and spreading upward.

Pests

Pests like spider mites and aphids can also cause yellowing in cherry tomato plant leaves. Spider mites are tiny pests that suck the sap out of the leaves, causing them to turn yellow. Aphids also suck the sap out of the leaves but are larger than spider mites and can be seen with the naked eye.

How to Prevent Yellowing in Cherry Tomato Plant Leaves

Preventing yellowing in cherry tomato plant leaves starts with proper care. Here are some tips to help prevent yellowing:

  • Water your plants properly. Make sure they are not over or underwatered.
  • Fertilize your plants regularly with a balanced fertilizer that includes nitrogen, iron, and magnesium.
  • Use disease-resistant varieties of cherry tomato plants.
  • Keep your garden clean by removing any dead or diseased plant material.
  • Inspect your plants regularly for pests and take action if you see any.

FAQ

Can I save my cherry tomato plant if its leaves have turned yellow?

Yes, you can save your cherry tomato plant if its leaves have turned yellow. First, identify the cause of the yellowing and take action to correct it. If it’s due to a lack of nutrients, fertilize your plant with a balanced fertilizer. If it’s due to overwatering or underwatering, adjust your watering schedule accordingly. If it’s due to a disease or pest infestation, treat your plant with an appropriate solution.

Is it safe to eat tomatoes from a plant with yellowing leaves?

It depends on the cause of the yellowing. If it’s due to a lack of nutrients, it should be safe to eat the tomatoes. However, if it’s due to a disease or pest infestation, it may not be safe to eat the tomatoes. If you are unsure, it’s best to err on the side of caution and discard the tomatoes.

How often should I fertilize my cherry tomato plants?

It’s recommended to fertilize cherry tomato plants every 2-3 weeks with a balanced fertilizer that includes nitrogen, iron, and magnesium. Be sure to follow the instructions on the fertilizer package for proper application.

Can yellow leaves turn green again?

If the yellowing is due to a lack of nutrients or improper watering, the leaves may turn green again once the issue has been corrected. However, if it’s due to a disease or pest infestation, the leaves may not turn green again.