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How does it Spread?
Fire blight bacteria is easily spread by many means: rain splashes carrying bacteria from one plant to another; birds, insects or animals; an infected plant rubbing against its neighbour. Even gardeners can unwittingly transmit the bacteria on infected gardening tools or when watering. The time of maximum risk of infection is late spring or early summer when the bacteria emerge from their dormant period and the oozing from cankers is most pronounced.
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