Orange Tree Diseases

6 Common Orange Tree Diseases You Need to Look Out For

6 Common Orange Tree Diseases You Need to Look Out For

Orange trees can be heavily affected by insects, fungus, bacteria and virus diseases. Discover the most common orange tree diseases to protect your trees.

If you have orange trees, you want to keep them at their healthiest, so they can provide delicious oranges for you for years to come.

So it's important you know about the potential orange tree diseases that can ravage orange trees. Because the more you educate yourself on what dangers are out there for your trees, the better you can be at preventing them from damage.

That's why we put together this post on six common orange tree diseases you need to be aware of.

That way you'll be able to understand the potential attackers of your orange trees!

Sound interesting? Keep reading to find out more.

Bark and Trunk Diseases

There are several dangerous bark and trunk diseases that you should be aware of with your orange trees. Unfortunately, some of them have no knowable treatment.

Psorosis bark scaling virus disease is one such disease. It's often found often in older trees. It shows itself through peeling bark on the orange tree's trunk and branches.

If your tree gets it, you should continue to care for the tree as normal, but if it gets girdled, you'll need to remove it from the soil when it dies.

Foot rot fungus is another disease without any known treatment. If you notice cankers and lesions around the base of the orange tree, it might be Foot Rot Fungus. This is especially true if those lesions have sap coming out of them.

While there's no treatment, you can take steps to minimize the chances of Foot Rot Fungus. For starters, plant your orange trees in well-draining soil, and with raised beds, if you have heavy clay soil.

Then make sure not to overwater them. That will make your chances of having a successful citrus season all the better!

Leaves Diseases

Sooty mold is a common disease of the leaves of orange trees. If you notice your leaves have blackened spots, it might be sooty mold. And while technically it's not a disease, but a fungus, it's still not great for your orange tree.

You can use a soap and water solution to wash the spots off. This will also help drive off the aphids and leafhoppers that leave the fungus in the first place.

Citrus greening is a bacterial disease that comes courtesy of the Asian citrus psyllid. The primary symptom is yellow mottling on the orange tree's leaves. Another noticeable characteristic is the midvein appears more pronounced than usual.

Unfortunately, there's no cure for this disease. But giving the tree proper general care will go a long way towards having it survive citrus greening.

Fruit Diseases

Citrus stubborn disease affects the oranges on the tree, causing them to look lopsided. This is because the seed pocket is pushed to one side. It's spread by leafhoppers and should be sorted by spraying the tree with insecticidal soap or oil.

Alternaria black fungus is another disease that has no known cure. It causes a black fungus to appear inside the oranges. It tends to be more common after rainy weather. You'll need to throw out any affected fruit and leaf litter.

Orange Tree Diseases

As you can see, some orange tree diseases are treatable, while others are not. But either way, proper care of your orange trees will help them survive and thrive.

Growing trees is fun, and every tree we send comes with a 20-page care guide.


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  • My orange tree has produced beautiful orange for years now some are dropping before they ripen and some looks like they are splitting. What can I do?

    barry preston on

  • I want ko know about this subject

    Kshitiz sharma on

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