What is Fireblight? Fireblight (Erwinia amylorova) is a bacterial disease whose common hosts include Hawthorn, Cotoneaster, apple, pear, and rowan. It cannot be treated and affected trees must be destroyed. Symptoms include the withering of shoots and leaves (‘Shepherd’s Stick’), cankers, and bacterial ooze. Report symptoms to plantandpests@agriculture.gov.ie. Fireblight is known to enter through latent … Continue reading Fireblight