Are birch trees susceptible to fire blight?

Birch trees (Betula spp.) are not susceptible to fire blight. Fire blight is a bacterial disease that primarily affects plants in the family Rosaceae, which includes apple, pear, and other related fruit trees. Birch trees belong to the family Betulaceae, which includes trees like alder, hazel, and hornbeam. Therefore, birch trees are not at risk of infection by the bacteria that causes fire blight.