A study led by scientists at the Holden Arboretum has found evidence that beech leaf disease (BLD) symptom development is genetically controlled, providing the first evidence that some American beech trees may have genetic resistance. This finding supports further investigation and development of br eeding populations for BLD resistance. Nearly a third of beech trees near BLD's epicenter in northeastern Ohio, the majority of which were smaller trees, have died since the disease was discovered in 2012. ...read more read less