Erwinia amylovora is a bacterium that causes fire blight, a serious disease affecting plants in the Rosaceae family, particularly apple and pear trees. It thrives in warm, wet conditions and can spread rapidly through flowers, shoots, and branches, leading to wilting and blackened plant tissues. This pathogen is primarily transmitted by insects, rain, and contaminated tools. Effective management strategies include pruning infected branches, using resistant plant varieties, and applying appropriate bactericides. Early detection and intervention are crucial to minimize damage and protect affected orchards from severe losses.