Oak trees change their fine roots and "energize" soil microbes by supplying them with a cocktail of small organic compounds, ...

A deadly new oak-tree disease can be prevented by pruning them in the dormant season (if needed) instead of spring or summer.

Oak wilt weakens white oak trees and kills red oaks within weeks of infection. Bacterial leaf scorch is a chronic disease that worsens over several years. Both diseases spread to nearby oaks.

Oak wilt (Ceratocystis fagacearum) is a fungal disease that can quickly kill oak trees within a few months of infection. It is prominent in eastern and mid-western US states and is lethal to most ...

Common Oak Tree Diseases Oak trees are susceptible to various diseases that can compromise their health. If you notice changes in the green foliage on an otherwise healthy tree, consider the ...

Want to know what's ailing nearby trees? This index of common tree diseases and pathogens can help you identify and prevent further decay.

Oak wilt is a lethal disease of oak trees that is active in Northeast Ohio. Oak wilt symptoms are most noticeable in summer when the yard looks like autumn covered in dead leaves. (Photo Courtesy ...

Oak trees sent to the University of Connecticut that originated in a Maryland nursery appeared to have been infected with oak wilt, but the trees were destroyed before the disease could be ...

Oak trees are one of the standard trees we find across Oklahoma. They are durable, and for the most part problem-free, trees to have in your landscape. However, there is a disease that can kill a ...

Oak wilt weakens white oak trees and kills red oaks within weeks of infection. Bacterial leaf scorch is a chronic disease that worsens over several years. Both diseases spread to nearby oaks.