Tree disease problems

Fireblight

7. Fireblight

A bacterial disease, fireblight causes shoot blight and stem cankers on certain plants in the rose family. Pear, apple, and crabapple trees are affected. Highly susceptible species can be severely disfigured and even killed by this disease. In addition to preventive treatment to manage fireblight, many highly resistant apple, crabapple, and pear varieties are available.