MICHIGAN (WNEM) - The Michigan Department of Natural Resources (DNR) is asking the public to prune ... trees in the red oak family, including black oak, northern red oak, and northern pin oak.

“The best time to prune oak trees would be as they have ... Iowa’s red, black, and pin oak trees are more susceptible to oak ...

Root grafts may occur between different oak species, such as between northern pin oaks and bur oaks. Avoid wounding or cutting healthy oaks, particularly during spring and early summer, to prevent ...

A tree is going through major changes at these times, and branch removal can reduce the vigor of a tree. One species where timing of pruning is critical, is oak. The pathogen that causes the disease ...