Observing proper tree maintenance doesn’t mean your trees will be immune to diseases. To ensure your trees remain healthy, you should call an arborist when you notice any alarming signs. Discover some signs of a diseased tree.

1. Powdery Mildew

Powdery mildew is a common plant disease characterized by white patches with a powdery appearance. This condition is prevalent during warm, dry weather. Powdery mildew affects the succulent tissue.

Although many plants tend to be resistant to powdery mildew, tree experts use chemical treatments to prevent the progress of the disease. The powdery mildew fungus attacks trees from the genus Microsphaea. The fungus causes the shoots, flowers, and leaves to grow abnormally. This condition also stunts the growth of trees. Arborists often advise you to choose fungus-resistant trees and to plant trees in spacious and shady areas.

2. Leaning Trunk

A leaning or crooked tree is a sign of an unusual growth pattern. If your tree starts leaning slowly or grows unevenly, this may not be a cause for alarm. Generally, odd growth patterns cause trees to lack balance.

However, if your tree suddenly starts to lean, this means it’s likely severely damaged and could easily fall. If your tree leans for over 15 degrees, this is often a sign of root or wind damage. If the whole trunk leans 30 degrees, you may need to call a tree removal service.

3. Armillaria Root Rot

This is a condition from the fungus Armillaria. Armillaria is capable of thriving for many years in an old tree’s stump or roots. The fungus can also infect healthy roots. The shoestring-like strands of the fungal growth can reach up to 10 feet from a diseased tree to the roots of a healthy tree.

When the fungus infects the tree, it causes its wood to decay. A strong tree can slow down the spread of the fungus, but a weak tree gets overwhelmed in a short time span. Some signs that your trees have Armillaria include poor growth and yellow leaves. The tree may also have dead branches and produce cones or seeds. The tree could easily fall because of the loss of roots.

4. Peeling Tree Bark

Another sign of a diseased tree is a peeling tree bark. In some cases, the peeling tree bark is a normal shedding process. If bark covers the wood after the older one peels away, the tree is going through the normal shedding process.

However, if you see bare wood under the peeling bark, you likely have a diseased tree. Sometimes, peeling tree bark arises because of environmental factors. For example, if the peeling bark on the tree is on the south side of the tree and exposes the bare wood, the problem is usually frost or sunscald damage. If the shedding affects a wider area of the exposed wood, the tree will likely die.

Hardwood trees with a peeling bark condition suffer from a disease known as hypoxylon canker. A major sign of this disease is wilting and yellowing leaves. You’ll also notice that the branches are dying. The wood under the peeling bark is also covered with a layer of fungus. The only remedy for hypoxylon canker is tree removal. You should also destroy the wood from the tree to prevent the fungus from spreading to healthy trees.

Trees have numerous benefits, including providing the oxygen humans need to breathe, preventing soil erosion, and minimizing the effects of flooding. Trees are also good for the aesthetics of your landscape. Maintenance procedures such as pruning and watering can do so much to prevent diseases. 

Therefore, keep an eye out for some weird signs on your trees. If you notice any unusual signs and behavior, reach out to Knuckleheads Tree Service. We have years of experience in tree maintenance and removal services. Contact us for a consultation so we can determine the problem with your trees.

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