Disease and insect infestations, which causing pathogens, are two of the most typical causes of why a tree dies. You can start protecting your trees by knowing the most typical tree diseases within Delaware County Land. By being informed about them, you can opt to plant trees, which are not prone to those diseases. Now, in this article, we will discuss to you some of them, their indicators, and what measures to take to stop them: 

Canker disease 

The common indicators that a tree has canker disease are when there are dead areas on the bark, trunk, and branches. Different kinds of fungi are the culprit of this type of disease. You can prevent canker disease by stopping wounds to happen on your trees. Moreover, you can fortify your tree by watering it consistently and fertilization. 

Rot tree and butt-rot  

This disease basically impacts hardwood trees and it is rampant on trees. Rot tree and butt-rot damages are due to fungi, which penetrates into the trees through some tree damages, like tree wounds. You can avoid this kind of disease by reducing damage to your tree’s root systems and tree trunk. 

Heart rot  

It is common for deciduous trees to be prone to heart rot disease. Similar to the previous rot, this is also caused by fungi that seep into the wounds of the trees and some tree damages. Pruning can help stop this to happen, leaving large wood areas open and exposed. Make sure that broken deadwood and branches are eliminated after severe storms and seasonally. 

Leaf mold 

If your leaves have black to brown spots, which usually has rings all over the spot, it means that your tree has a leaf spot disease. Trees that have leaf spots disease usually have yellow leaves that prematurely falls down on the ground. You can avoid this disease with great preventative tree maintenance like making sure that fallen leaves are composted and raked, thinning your tree branches, and fertilizing your trees during the springtime. 

Sooty Mold  

This kind of disease refers to dark fungi, which can be seen on the tree’s leaves. If your area has a warmer climate, there is a chance that sooty mold disease is rampant. They usually occur once there is limited moisture and high temperature. You can support in preventing this disease by making sure that your trees are consistently and properly watered.  


Preventative tree care’s goal is to prevent expensive tree problems like excessive moss growth, downed limbs, insect infestations, or even worse from these diseases. Also, it promotes to reduce tree damages from infections and diseases. The list we provided above is only some of the preventative measures that you must know to further take care of your trees. Those tips can also help protect and maintain your trees for as long as you want. If you want further tips and articles about preventative tree care, never hesitate to reach out to Landscape & Tree Delaware County for our products and services available for our valued clients.