In the fruit-growing regions of Caldwell, Emmett, and older neighborhoods in Boise, Fire Blight is a devastating and highly contagious bacterial disease. Caused by the bacterium Erwinia amylovora, it primarily targets plants in the rose family, including apple, pear, crabapple, and hawthorn trees. The disease typically takes hold during wet, warm spring weather. Bacteria enter through the tree’s blossoms or fresh wounds, rapidly colonizing the vascular tissue. The most recognizable symptom is a sudden “scorched” appearance; leaves and blossoms turn black and wilt into a distinctive shepherd’s crook shape, while dark, oozing cankers form on the branches. Because Fire Blight moves systematically through the inner bark, superficial sprays are often ineffective once the tree is infected. Management requires aggressive and precise sanitation. Infected branches must be pruned out during dry weather, cutting at least 8 to 12 inches below the visible canker into healthy wood. Sterilizing pruning tools between every single cut is non-negotiable to prevent the bacteria from spreading to healthy limbs.