How To Prevent And Treat Early Blight On Tomatoes In 2023

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How to Prevent and Get Rid of Early Blight * The Homesteading Hippy


Tomatoes are a popular crop for home gardeners and commercial growers alike. However, one common problem that tomato plants face is early blight. Early blight is a fungal disease that affects the leaves, stems, and fruits of tomato plants, causing significant damage if not properly managed. In this article, we will provide you with tips and strategies to prevent and treat early blight on tomatoes in the year 2023.

What is Early Blight?

Early blight, also known as Alternaria solani, is a fungal disease that affects tomato plants. It typically starts as small, dark spots on the lower leaves and gradually spreads to the upper leaves, stems, and fruits. As the disease progresses, the affected leaves turn yellow and eventually die off, reducing the plant’s ability to produce healthy fruits.

Preventing Early Blight

Prevention is key when it comes to managing early blight on tomatoes. Here are some effective strategies to keep your tomato plants healthy and blight-free:

1. Choose Resistant Tomato Varieties

When selecting tomato varieties for your garden, opt for those that are known to be resistant to early blight. Resistant varieties have genetic traits that make them less susceptible to the disease, reducing the risk of infection.

2. Rotate Crops

Practice crop rotation by avoiding planting tomatoes in the same spot for consecutive years. Early blight spores can survive in the soil over the winter, so rotating your crops helps to break the disease cycle and reduce the chances of infection.

3. Provide Adequate Spacing

Avoid overcrowding your tomato plants as this can create a favorable environment for early blight to thrive. Provide enough space between plants to promote good air circulation, which helps to keep the foliage dry and minimize the spread of disease.

4. Mulch and Water Properly

Apply a layer of organic mulch, such as straw or wood chips, around the base of your tomato plants. Mulching helps to conserve moisture, suppress weeds, and prevent soil splashing onto the leaves, which can carry early blight spores. Water the plants at the base to keep the foliage dry, as wet leaves are more susceptible to fungal infections.

Treating Early Blight

If despite your best efforts, your tomato plants still develop early blight, here are some treatment options:

1. Remove Infected Leaves

As soon as you notice the symptoms of early blight, remove and destroy the infected leaves. This helps to prevent further spread of the disease and allows the plant to redirect its energy towards healthy growth.

2. Apply Fungicides

If the disease is severe, you may consider using fungicides labeled for early blight control. Look for products containing chlorothalonil or copper-based ingredients, as they are effective against fungal diseases. Follow the instructions on the label carefully to ensure safe and proper application.

3. Prune and Stake

Pruning your tomato plants and providing proper staking or trellising helps to improve air circulation and reduce the chances of early blight. Remove the lower branches that are in contact with the soil and thin out the foliage to promote better airflow.


Early blight can be a frustrating problem for tomato growers, but with the right preventive measures and timely treatment, you can minimize its impact on your plants. Remember to choose resistant tomato varieties, practice crop rotation, provide adequate spacing, mulch and water properly, and promptly remove infected leaves. If needed, consider using fungicides and adopting proper pruning and staking techniques. By taking these steps, you can enjoy healthy and productive tomato plants in the year 2023 and beyond.

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