The white ash, which is typically found on higher and drier sites than its cohorts in the ash family, has been threatened due to the invasive beetle called the emerald ash borer. This species features ...

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

The Korean mountain ash (Sorbus alnifolia) is a perfect example. It bursts with miniature white flowers ... them from your tree. Scale insects look like bumps on your tree's leaves and stems ...