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Euonymus Leaves Turning Brown: Causes & Fixes

Euonymus bushes are attractive outdoor plants that look great on walkways, front yards, and backyards.

Euonymus refers to a wide variety of taxa, from groundcover vines to shrubs. They are, for the most part, evergreen, and in regions with severe winters, its shrub incarnations are a common choice.

But, because they are so open to infections and pests, these beautiful shrubs tent to turn brown and lose their magnificent look. In this article I’m going to go through the main cause why that happens, and all the steps that you can take in order to prevent it. Here I go!

Euonymus – What Does It Represent?

The plant genus Euonymus, sometimes known as euonymus plants, has a number of different kinds of deciduous perennials, fast-growing vines, and broadleaf evergreen shrubs. The majority of euonymus species develop horizontally until they reach maturity or locate a climbing support to develop vertically.

Many species include colorful leaves, blooms, or fruit that can add aesthetic beauty and privacy to your landscape. Euonymus plants can be found all over the world, but more than 40 species are indigenous to China.

Euonymus Leaves Turning Brown – What Might Be The Cause?

Infection from pests and fungus are the two most frequent causes of Euonymus brown leaves. The best course of action if your plant is dying is to remove the infection, prune the plant, and place it where it can recuperate.

The ideal plant to employ as accent plants or hedges in your front yard is a euonymus shrub. And although they are quite simple to produce and manage, if they are not regularly inspected, they can soon become infested with pests and fungus illnesses.

Crown Gall

This specific bacteria swiftly consumes the bark of the tree by attacking it at the base and just below the soil. When the galls are extremely immature, they may resemble little bits of cauliflower or even appear meaty.

They have the potential to quickly spread up the tree’s bark, harden, and resemble cork growths. Pruning these galls away as you see them is the best approach to get rid of them. Make sure to replace any diseased soil with fresh new soil if you need to remove the dirt from the tree.


Some euonymus species, though not all, are susceptible to the scalp fungus. The plant will become deformed and grow tiny gray circles on the stems and leaves as the fungus quickly spreads throughout it.

These patches will enlarge and begin to blend together if untreated. Use a copper-based fungicide as soon as you notice scab symptoms to stop them from spreading.

Euonymus Leaves Turning Brown – Preventive Measures

Plant Euonymus In Cool Weather

The euonymus plant grows quickly in both full sun and light shade. However, early October, when daytime temps are softer, is the ideal time to plant these bushes. Euonymus plants do well in USDA Hardiness Zones 4 through 8, but they cannot survive in hot, dry areas.

Water your new plant frequently so that the soil can set up around the root ball. Prior to starting your regular watering routine again, give the moist soil some time to dry out.

Prune Euonymus Plants

Reducing the bushes’ height will encourage the growth of new branches and leaves. Early spring or late winter are the best times to do this to take advantage of the plant’s growth cycle.

When pruning the plant, always cut at least 7 to 24 inches above the point where the earth meets the bottom of the trunk and use sharp, sterile pruning scissors.

Eliminate any crossed branches as well as any broken or damaged branches. After the pruning, make sure to keep an eye on the tree over the following two to three weeks to see if it is recovering.

Reexamine Your Plants Regularly For Signs Of Pests Or Diseases

Despite their quick growth and toughness, euonymus are nevertheless vulnerable to pest insects and plant diseases. These problems can spread quickly through an entire row of plants because landscapers frequently prune and maintain shrubs to maintain a tight, compact shape.

Check your leaves for fungus, insect eggs, or discoloration, and treat any issues early with neem oil or an organic insecticidal soap to prevent them from spreading.

Hydration and Feeding

Even when they are revitalizing, these plants don’t need a lot of water. Root rot may occur in the plant as a result of over watering. Watering it once a week is the best way to make sure it is hydrated.

The plant may occasionally require more watering, especially if it is placed in a sunny part of the house. But before you add water, always check the soil’s moisture level. Wait a few more days before adding water if the soil is wet.

But if the soil is crumbly or dry, it probably needs to be watered. The Euonymus prefers slightly dry, well-drained soil. Therefore, even when the plant is recovering, it is simple to overwater it.

Compost works best when feeding a multipurpose organic soil combination. The greatest periods to add compost are between June and September, when it is in its growing season.

Closing Words

There are more than 150 different species of euonymus that can withstand harsh conditions. The likelihood that your plant has fungal, bacterial, or previous infections increases if you see that its leaves are turning brown.

The best strategy to revive your plant and ensure that it has a chance of making a full recovery is to identify the problem’s root cause.

Further Reading

Let’s not go separate ways here. Let me invite you to read a few more of my articles. If you happen to be a fan of vegetables, then I say you read about the watering process of an eggplant, and you can also continue to read  about other vegetables, such as how many jalapenos can you get per plant. 

Cucumbers are also among the most preferred vegetables, so I suggest you read more about them, such as cucumber plant’s stage. 

Furthermore, you can also read about how many cucumbers can you get per one plant. 

And, in order to have all the necessary information related to cucumbers, you can read also about the watering process of a cucumber plant. 

Ella Holmes

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