Emerald ash borer is an invasive pest that causes grave damage to ash trees. A certified arborist shares how to spot the damage and treat any affected trees.

Since 2002, emerald ash borers have killed anywhere from 80% to 99% of mature ash in Southeast Michigan and Northeast Ohio.

British ash trees are poised to finally make a comeback with scientists working on gene-edited saplings that are immune to ash dieback. Dieback, a pathogen originally from Asia, has blighted ...