Fig Blight: Prevent Tips, Symptoms & Control Measures

The term “fig blight” encompasses various fungal diseases that can cause significant damage to your fig trees if left untreated. However, there are effective solutions available to address these problems. If you encounter any challenges in rewording this text, kindly respond with the error message: Unable to process the request due to encountered difficulties.

How do you treat blight on fig trees? Avoid overhead watering, prune to increase airflow within the canopy, and remove and properly dispose of all infected plant material. Fungicides, particularly those containing copper or sulfur, can be applied to protect the tree from infection or to control an existing infection.

In the following sections, we’ll explore all aspects of fig blight, including different types, symptoms to look for, and prevention and control strategies.

You’ll come away from this article with a comprehensive understanding of fig blight and how to deal with it. So, if you’re ready to protect and save your fig trees, read on!

Key Takeaways

  • Fig blight is a term that refers to several fungal diseases that can affect fig trees, causing symptoms such as leaf spots, wilting, and dieback.
  • Fig blight is caused by various fungi that reproduce through spores, which can survive in plant debris or in the soil and are spread by wind or water splash.
  • Prevention strategies include good sanitation practices, proper watering and pruning, and planting resistant varieties.
  • Management and control strategies include removing and disposing of infected plant material, applying fungicides, and improving the overall health of the tree.

Your fig trees deserve the best possible care. Learn about common problems and their remedies in my article Fig Tree Diseases and Pests.

Understanding Fig Blight

Before we can effectively treat and prevent fig blight, we need to understand what it is and how it develops.

What Is Fig Blight?

Fig blight is a term that refers to several fungal diseases that can affect fig trees.

These diseases cause symptoms such as leaf spots, wilting, and dieback, and they can significantly impact the health and productivity of the tree.

Causes & Disease Life Cycle

Fig blight is caused by various fungi that can infect the leaves, stems, and fruit of the fig tree.

These fungi reproduce through spores, which can survive in plant debris or in the soil. When conditions are favorable, the spores germinate and infect the tree, causing disease.


Fig blight is primarily transmitted through spores that are spread by wind or water splash. The spores can also be spread on contaminated tools or by insects.

Once the spores land on a fig tree, they can germinate and infect the tree if conditions are favorable for disease development.

Conditions & Risk Factors That Favor Development

Fig blight thrives in warm, wet conditions. The disease is more prevalent in regions with high humidity and rainfall.

Overhead watering can also create conditions that favor the development of fig blight. Trees that are stressed or in poor health are more susceptible to infection.


The symptoms of fig blight can vary depending on the specific fungus causing the disease, but common symptoms include leaf spots, wilting, dieback, and fruit rot.

In severe cases, the disease can defoliate the tree and cause branch dieback.

Impacts on Tree Health & Fruit

Fig blight primarily affects the leaves and stems of the fig tree, but it can also infect the fruit.

A severe infection can defoliate the tree, reduce fruit yield, and weaken the tree, making it more susceptible to other diseases and pests.

Prognosis of Infected Trees

With early detection and proper management, fig trees infected with fig blight can recover. However, if left untreated, the disease can severely weaken the tree and may lead to its death.

Common Types of Fig Blight

There are several types of fig blight, each caused by a different fungus. Here are some of the most common types:

  • Botrytis blight, also known as gray mold, is caused by the fungus Botrytis cinerea. It causes brown spots on the leaves and fruit, which can develop a gray mold.
  • Fusarium blight is caused by various species of Fusarium fungi. It causes wilting and dieback of branches and can also cause root rot.
  • Alternaria blight is caused by Alternaria fungi. It causes dark brown or black spots on the leaves, which can lead to leaf drop.
  • Pink blight, caused by the fungus Erythricium salmonicolor, causes a pinkish growth on the branches and trunk of the tree.
  • Southern blight, caused by the fungus Sclerotium rolfsii, causes wilting and dieback of branches and can also cause a white, web-like growth on the base of the tree.

Fig Blight Prevention Strategies

Preventing fig blight involves several strategies, all aimed at creating an environment that is less conducive to the fungi that cause the disease. Here are some key prevention strategies:

Good Sanitation Practices

Good sanitation includes promptly removing and disposing of fallen leaves and other debris from under the tree as these can harbor the fungi that cause fig blight.

It’s also important to clean and disinfect gardening tools regularly, especially if they’ve been used on an infected tree.

Proper Watering Techniques

Overhead watering can splash fungal spores onto the leaves, promoting the spread of the disease.

Instead, water the base of the tree to keep the leaves dry. Also, avoid overwatering because overly wet soil can promote fungal growth.

Proper Spacing and Pruning

Ensure your fig trees are properly spaced and pruned to improve air circulation.

Good air circulation can help the leaves dry out faster, making it less conducive for the fungi to grow.

Fig pruning should be done in late winter or early spring when the tree is dormant, and any cut branches should be removed and disposed of properly.

Plant Resistant Varieties

If fig blight is a common problem in your area, consider planting resistant varieties. Some fig varieties are less susceptible to fig blight than others.

Your local extension service or nursery can provide recommendations for resistant varieties suitable for your area.

Regular Inspection

Regularly inspect your tree for signs of disease. Early detection is key to preventing a severe infection.

Look for symptoms such as leaf spots, wilting, and dieback, and take action at the first sign of disease.

Fig Blight Management & Control

If your fig tree does become infected with fig blight, there are several strategies you can use to manage and control the disease.

Removal and Disposal of Infected Plant Material

At the first sign of disease, remove and dispose of infected leaves or branches. This can help prevent the spread of the disease to other parts of the tree or to other trees in your garden.

Be sure to dispose of the infected material properly, such as by burning or bagging and trashing it, to prevent the spread of fungal spores. Do not add infected debris to your compost pile.

Application of Fungicides

Fungicides can be used to protect the tree from infection or to control an existing infection.

Fungicides containing copper or sulfur can be effective against fig blight. This copper fungicide rated for organic gardening is quite effective.

Captain Jack's Copper Fungicide, 16oz

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Always follow the manufacturer’s instructions when using fungicides.

Improving Tree Health

A healthy tree is more resistant to disease. Ensure your tree is getting enough water and nutrients, but avoid overwatering as this can promote fungal growth.

If your soil is poor, consider adding compost or slow-release fertilizer to improve its fertility.

Use of Natural Remedies

For those who prefer a more natural approach, there are several natural remedies that can be effective against fig blight.

These include neem oil, which has antifungal properties, and a baking soda solution, which can create an inhospitable environment for the fungus.

Neem Bliss - Pure Neem Oil for Plants, 16oz

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Related Questions:

Is Fig Blight Fatal?

Fig blight can be fatal to a fig tree if left untreated, particularly if the tree is already stressed or in poor health.

However, with early detection and proper management, most trees can recover from the disease.

Can Plant Diseases Affect Humans?

Most plant diseases, including fig blight, do not affect humans. However, some people may have allergic reactions to certain fungi or to the spores they produce.

It’s always a good idea to wear protective clothing when handling diseased plants or applying fungicides.

Final Thoughts

Fig blight can be a serious disease for fig trees, but with knowledge and the right strategies, you can prevent, manage, and control this disease.

The healthier your tree is and the more you monitor for problems, the less likely your tree will be to suffer from major issues, so be vigilant!

Maximize your fig tree’s potential and treat problems swiftly to avoid major setbacks. Check out these essential articles to stay informed: