Updated: July 2, 2022

Evergreen plants are a great addition to any garden or landscaping project. They provide year-round greenery and add texture and depth to your outdoor space. However, when your evergreen plant starts developing brown spots, it can be a cause for concern. Here are some reasons why your evergreen plant may have brown spots.

Lack of Water

One of the most common reasons for brown spots on evergreen plants is a lack of water. Evergreens need consistent moisture to thrive, especially during the hot summer months. If you notice brown spots developing on your evergreen, check the soil moisture level. If the soil is dry, it’s time to water your plant deeply.

Overwatering

While a lack of water can cause brown spots, overwatering can also be a problem. Overwatering can lead to root rot, which can cause brown spots on the leaves. Make sure your evergreen plant is in well-draining soil and only water when the top inch of soil is dry to the touch.

Pests

Pests can also cause brown spots on evergreen plants. Spider mites, scale insects, and mealybugs are common culprits. These pests suck the sap from the leaves, causing them to turn brown and eventually fall off. Check your evergreen plant regularly for signs of pests and treat them promptly if you find any.

Fungal Diseases

Fungal diseases can also cause brown spots on evergreen plants. Needle blight, cedar apple rust, and Phytophthora root rot are all common fungal diseases that can affect evergreens. These diseases typically start as small brown spots that spread over time. If you suspect your evergreen has a fungal disease, consult with a professional landscaper or arborist for treatment options.

Environmental Factors

Environmental factors such as extreme heat or cold, high winds, and pollution can also cause brown spots on evergreen plants. These factors can stress the plant, making it more susceptible to disease and pests. Make sure your evergreen is in a location that provides adequate protection from these environmental factors.

Nutrient Deficiencies

Finally, nutrient deficiencies can cause brown spots on evergreen plants. Lack of nitrogen, iron, or magnesium can all lead to discoloration and brown spots on the leaves. Make sure your evergreen is getting the proper nutrients it needs by fertilizing it regularly with a balanced fertilizer.

In conclusion, brown spots on evergreen plants can be caused by a variety of factors, including lack of water, overwatering, pests, fungal diseases, environmental factors, and nutrient deficiencies. By identifying the cause of the brown spots and taking appropriate action, you can help your evergreen plant thrive.

FAQ

Can I save my evergreen if it has brown spots?

Yes, in most cases you can save your evergreen if it has brown spots. Identify the cause of the brown spots and take appropriate action to treat the issue.

How do I prevent brown spots on my evergreen?

Proper watering, fertilization, and pest control are key to preventing brown spots on your evergreen. Make sure your plant is in well-draining soil and getting adequate nutrients and water.

Can I prune off the brown spots?

It depends on the severity of the brown spots. If there are only a few small spots, you can prune them off with clean pruning shears. However, if the brown spots are extensive, pruning may not be effective in saving the plant.