Andrew C. Bell1, Thomas G. Ranney1, Thomas A. Eaker1, and Turner B. Sutton2 1Department of Horticultural Science, Mountain Horticultural Crops Research and Extension Center, North Carolina State Un

Fire blight is the enemy of rosebushes and apple and pear trees. It is caused by a bacteria (erwinia amylovora) which attacks starting generally from the blossoms or flowers and moving up to the twig

Connie Reeves Fire blight, caused by the bacterium Erwinia amylovora, affects over 130 plant species in the rose family. In Minnesota, fire blight is most often seen on apple, crabapple, pear, moun

Christopher J. Starbuck Division of Plant Sciences Michele R. Warmund Division of Plant Sciences Fire blight is a bacterial disease affecting apple, crabapple, pear, hawthorne, pyracantha (fireth

Bacterial disease affecting plants in the Rose family By: Sandy Feather ©2008 Penn State Cooperative Extension Q. My crabapple tree bloomed beautifully this spring, but some of the blooms seemed

Gail Ruhl, Senior Plant Disease Diagnostician, Department of Botany & Plant Pathology, Purdue University Symptoms of fireblight have recently become more evident following several weeks of elevated