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

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.

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

Oak trees are focal points of many home landscapes, parks, and green spaces throughout Wisconsin. Several species are native ...

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 ...

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 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 ...

Storms, pests, diseases, and overcrowding can all signal it's time to cut down a tree. Look for these signs and more to know ...

Backyard Farmer will try to diagnose an oak disease and get landscape plants well for fall.

Editor’s note: A spokesperson for the city of Pasadena told KTLA that the tree is believed to be less than 100 years old and not 200 years old as originally reported. Residents of a Pasadena ...

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.