the less likely the disease will spread by root grafting. The majority of such spread in a Minneapolis-St. Paul urban study was found to occur within 30 feet. Researchers found that wilt did occur in ...

One key characteristic of pin oak are the branches, which angle downward especially on the lower part of the tree. The pin oak tends to keep its lower branches for ... season to avoid attracting ...

Iowa’s red, black, and pin oak ... the disease. You can continue to prune oaks all winter long, but should stop by the end of ...