DEAR NEIL: We have moved into a 50-year-old house that has a mature Arizona ash. It’s too wide for where it is. I’m afraid its branches will break in a storm. When can it be pruned? Dear Reader: You ...

Minneapolis officials are warning homeowners against pruning their ash trees. Even with this late spring, conditions are warm enough for the beetles to attack and kill ash trees. The invasive pests ...

Dutch elm disease is caused by a fungus and is highly lethal to elm trees. It can be spread through root grafts, elm bark ...

Glen Cove will replace ash trees damaged by the emerald ash borer, an invasive beetle from Asia that has destroyed tens of millions of trees across North America, city officials said. The city will ...