The fungal infection will first appear as lesions on the bark. As the fungus continues ... a fungicide treatment may be required. Since managing fungal infections in trees is complicated, it's ...

an invasive fungus that is threatening Minnesota’s oak tree population. Sometimes characterized by browning or golden leaves at the top of the tree and a dark bluish-gray discoloration in the bark, ...

However, almost all mature American elm trees have been killed in the last 50 years by Dutch elm disease, which is caused by a fungus, Ophiostoma novo-ulmi, introduced from Asia. Elm bark beetles ...

Because they settle so snugly, prying them loose will usually cause that piece of bark to come out with it. This can expose ...

This holiday season its probably not American chestnuts roasting on an open fire because the species is nearly extinct.