The Different Types Of Tree Diseases

There are quite a few different tree diseases that exist today. There is a multitude of species of trees, each of which is going to be afflicted by several different types of diseases that only affect their particular species. If you have oak trees, pine trees, or even shrubs, it is possible for them to get ill as a result of contracting these diseases over time. You will have to resolve these issues quickly as they can lead to the demise of any tree if they are exposed for too long. Here is a quick overview of the different types of tree diseases that your trees might have right now.

Common Tree Diseases

Some of the most common ones include those that will affect the bark, branches, and leaves. Others are going to affect the roots, or even go all the way to the top to the crown of the tree. Most of these are noticeable with a visual inspection. For example, if the leaves are turning early, or if the branches are turning black, this is an indication that something is wrong. Fungi are very easy to identify. It can be seen on the top of the bark, and this could lead to many problems. Let’s first look at one that will not only affect the crown of the tree but also the roots.

Phytophthora Root & Crown Rot

These are very noticeable for a couple different reasons. First of all, the trees can be discolored, the crown will die back, and the foliage will definitely look unhealthy. Trees will start to decline if they suffer from this problem, noticeable around the crown or the basal stem. Many of these conditions can kill the tree in as little as one single season which is why you need to act quickly.


You will need to look at the leaves of your trees to see this type of fungus. This is going to not only cause blotches on the leaves, but you’re going to see holes develop. As time passes, the tree can develop a gnarled appearance, primarily starting with the branches. You will also see the twigs with fungi on those, and this is an indication that it has begun to spread.

Oak Wilt

This is another one that can be identified by looking at the leaves, but you may also notice insects called sap deals. They are going to be attracted to the sap of the tree, and by interacting with the sap, this can spread the disease internally. You may notice leafs dropping, and turning brown. The symptoms can vary from tree to tree. Eventually, the entire canopy will begin to wilt, and the tree will die, usually within one or two seasons.

These are just a few of the more common tree diseases that you will encounter with certain trees. If you have not had an arborist out to inspect your trees in quite some time, it might be time to do so. For those that have this inspection done on it and you will basis, you probably won’t have anything to worry about. However, if you notice any type of discoloration of your leaves, branches, or fungi on the bark, it certainly time to call a professional arborist to help you out.